51CRV4
18 source records. Standards, editions and conditions are presented separately; matching grade names do not establish interchangeability.
Refer to each source for mass fractions and analysis type. Missing values are not treated as 0. Manufacturer typical values, standard guarantees and measured heat results must remain separate. Use the material selector for calculations and condition selection.
Open condition selection, comparison and carbon-equivalent tools for 51CRV4 →51CrV4 · DIN EN 10089-2003
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Spring steels
- Subcategory
- Spring steels
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- DIN EN 10089-2003
- Table / clause
- Table 3 and notes a/b and 7.1; Only the first 17 pages of the original text are available
- PDF page references
- 1、7、9、12、13
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.7 ～ 1.1 |
| Cr | 0.9 ～ 1.2 |
| V | 0.1 ～ 0.25 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Cu | ≤ 0.6 (lower limit not stated) |
| Sn | ≤ 0.06 (lower limit not stated) |
Applicability and limitations
DIN EN10089:2003-04 official English original, adopting standard EN10089:2002; Table 3 heat analysis wt%. ; Cu+10Sn≤.60%; Cu≤.60/Sn≤.06 are only single-item envelopes derived from the linkage formula under the condition that each element is non-negative; they are not independent limits from the original table and the linkage formula must be satisfied simultaneously. ; Table 3 Note a: unspecified elements shall not be intentionally added without the purchaser's consent (except additions needed to finish steelmaking); blanks shall not be filled as zero. ; Note b: when hardenability is specified, C may deviate slightly but not exceed ±.01, others shall comply with Table 4 except for P/S; Default composition has not been automatically relaxed. ; This document contains only the first 17 pages; Table 3 is complete and verifiable; Hardenability Tables 7/8 and other missing pages need to be supplemented separately; the completeness of the entire standard is not claimed. ; Hot-rolled spring steels intended for quenching and tempering; composition or annealed condition alone does not establish cold-heading suitability or actual supply..
Combined limits
- Combined-element limits
- Element coefficient
- Cu
- 1
- Sn
- 10
- Upper limit
- 0.6
- Requirement
- Cu + 10Sn ≤ 0.60 wt%
Verification notes
Official original Table 3: all 19 rows and footnotes visually checked.Jominy end-quench hardenability (conditional requirements)
EN 10089:2002 · BS EN 10089:2002 · Tables 7/8, 7.1.2–7.1.4 and Table 10 · PDF pages 6, 9, 17, 18, 20, 21
- Footnote a of Table 7/Table 8 refers to Figure 1; The scatter bands for +H and +HH shall be maintained separately; lower limits shall not be interchanged.
- Applicable only to conditions where the corresponding +H or +HH hardenability symbols are actually used for ordering; Specific delivery condition and dimension range shall still be confirmed according to the order and Table 1 of the standard.
- When ordering based on core hardness requirements per 7.1.3, the end-quench data in Table 7/Table 8 are for reference only and cannot serve as an acceptance guarantee for the same order item.
- HRC is the hardness at the specified distance of the end-quench test specimen, not the overall hardness of the finished product, nor does it prove cold-heading suitability or part performance.
- A horizontal line in the original table indicates that the lower limit for that distance is not specified and shall remain blank; Shall not be treated as 0; no interpolation, extrapolation, or conformity determination shall be performed for distances not listed.
- The shown quenching temperature is the standard end-quench test condition and cannot be used as a production heat treatment process parameter or recommendation.
- Testing shall be according to EN ISO642 as cited in Table 10 (source standard specifies ISO642:1999); Test units shall be divided by heat, with 1 sample per unit and 1 test per sample; sampling for disputes shall otherwise follow Table 10.
- This record is for DIN EN10089:2003-04 adopting EN10089:2002; Hardenability data is explicitly read from the original table of BS EN10089:2002; it is not claimed that missing pages of the DIN original document have been verified or completed.
+H normal hardenability band (7.1.2)
End-quench test condition temperature 850 ± 5 °C; This is not a production heat-treatment recommendation.
| Distance from quenched end (mm) | Lower limit (HRC) | Upper limit (HRC) |
|---|---|---|
| 1.5 | 57 | 65 |
| 3 | 56 | 65 |
| 5 | 55 | 64 |
| 7 | 54 | 64 |
| 9 | 53 | 63 |
| 11 | 51 | 63 |
| 13 | 50 | 63 |
| 15 | 48 | 62 |
| 20 | 44 | 62 |
| 25 | 41 | 62 |
| 30 | 37 | 61 |
| 35 | 35 | 60 |
| 40 | 34 | 60 |
| 45 | 33 | 59 |
| 50 | 32 | 58 |
+HH restricted hardenability band (7.1.4)
End-quench test condition temperature 850 ± 5 °C; This is not a production heat-treatment recommendation.
| Distance from quenched end (mm) | Lower limit (HRC) | Upper limit (HRC) |
|---|---|---|
| 1.5 | 60 | 65 |
| 3 | 59 | 65 |
| 5 | 58 | 64 |
| 7 | 57 | 64 |
| 9 | 56 | 63 |
| 11 | 55 | 63 |
| 13 | 54 | 63 |
| 15 | 53 | 62 |
| 20 | 50 | 62 |
| 25 | 48 | 62 |
| 30 | 45 | 61 |
| 35 | 43 | 60 |
| 40 | 43 | 60 |
| 45 | 42 | 59 |
| 50 | 41 | 58 |
51CrV4 · DIN EN 10132-4-2000(+AC:2002)
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Spring steels
- Subcategory
- Spring steels
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- DIN EN 10132-4-2000(+AC:2002)
- Table / clause
- Analysis-type boundaries in Table 1 and note a, and Table 2
- PDF page references
- 1、6
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.7 ～ 1.1 |
| Cr | 0.9 ～ 1.2 |
| V | 0.1 ～ 0.25 |
| Ni | ≤ 0.4 (lower limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Mo | ≤ 0.1 (lower limit not stated) |
Applicability and limitations
Official German DIN 2003-04 adopts EN10132-4:2000+AC:2002; PDF6, Table 1 gives heat-analysis mass fractions wt%. ; Cold-rolled narrow strip for heat-treatment applications; Covers spring steels and other special applications; it does not establish a basis for supply as cold-heading wire rod. ; Product-analysis tolerances in Table 2 are listed separately and are not mixed with the default heat-analysis range in Table 1; Within the same heat, ±tolerances must not be exceeded in both the lower and upper directions. ; Elements not listed in the table must not be intentionally added without purchaser consent, except to finish steelmaking; unspecified contents are not treated as zero. ; AC:2002 corrects the annealed/lightly skin-passed properties in Table 3; Only the complete Table 1 chemical composition was checked in this batch; mechanical properties require separate verification.
Verification notes
All 15 rows and footnotes in the official original text were visually checked51CrV4 · EN 10083-3-2006
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Alloy steel
- Subcategory
- Alloy steel
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- EN 10083-3-2006
- Table / clause
- Table 3 · Notes a–c
- PDF page references
- 1、18
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Mn | 0.7 ～ 1.1 |
| S | ≤ 0.025 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| V | 0.1 ～ 0.25 |
| Si | ≤ 0.4 (lower limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
Applicability and limitations
Composition is based on Table 3 of EN10083-3:2006 in the official English text of DIN EN10083-3:2007-01, heat analysis wt%. ; Note a: Elements not listed shall not be intentionally added without the purchaser's consent, except for additions needed to finish steelmaking and to enable boron to act on hardenability.; Unspecified values shall not be treated as zero. ; Note b: Small deviations are permitted where hardenability or quenched-and-tempered mechanical-property requirements apply, except for C/P/S; permitted deviations for other elements must not exceed Table 4.; Default heat analysis range shall not be expanded. ; For non-boron steels in this standard, Note c permits steel with improved machinability to be supplied on request: sulfur approximately 0.10%, with the Mn upper limit permitted to increase by an absolute 0.15%.; Approximate values are not default hard upper limits and must be determined by specific inquiry/order; they shall not be automatically mixed with ordinary grades. ; This standard covers alloy steels for quenching and tempering. Suitability for cold heading, wire-rod supply, annealing, surface and dimensions require separate confirmation; do not automatically add products..
Verification notes
Official English source cover, all 28 grades in Table 3 and notes a–c visually checked.51CrV4 · EN 10089-2002
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Spring steels
- Subcategory
- Spring steels
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- BS EN 10089:2002 (EN 10089:2002)
- Table / clause
- 7.1/Table 3, notes a/b
- PDF page references
- 3、9、13、14
- Unit
- Mass fraction (wt%)
- Analysis type
- Heat analysis
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.7 ～ 1.1 |
| Cr | 0.9 ～ 1.2 |
| V | 0.1 ～ 0.25 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Cu | ≤ 0.6 (lower limit not stated) |
| Sn | ≤ 0.06 (lower limit not stated) |
Applicability and limitations
Complete BS EN 10089:2002 original Table 3 heat analysis mass fraction wt%; Applies to hot-rolled steels for quenched-and-tempered springs; this does not by itself establish suitability for cold heading.. Cu+10Sn≤0.60wt%; Separate listings of Cu ≤0.60 and Sn ≤0.06 are only envelopes derived from a linked formula under the premise of non-negative values; both cannot be used at their upper limits simultaneously. Table 3 Note a: Elements not listed shall not be intentionally added without the purchaser's consent (except additions needed to finish steelmaking); blanks shall not be filled as zero. Table 3 Note b: When hardenability is specified, C may deviate slightly according to restricted conditions; Table 3 compositions are not automatically relaxed by default.
Combined limits
- Combined-element limits
- Element coefficient
- Cu
- 1
- Sn
- 10
- Upper limit
- 0.6
- Requirement
- Cu + 10Sn ≤ 0.60 wt%
Verification notes
All 19 grades and footnotes in original EN10089:2002, Table 3 have been checked; The original record omitted the coupled Cu+10Sn constraint.Jominy end-quench hardenability (conditional requirements)
EN 10089:2002 · BS EN 10089:2002 · Tables 7/8, 7.1.2–7.1.4 and Table 10 · PDF pages 6, 9, 17, 18, 20, 21
- Footnote a of Table 7/Table 8 refers to Figure 1; The scatter bands for +H and +HH shall be maintained separately; lower limits shall not be interchanged.
- Applicable only to conditions where the corresponding +H or +HH hardenability symbols are actually used for ordering; Specific delivery condition and dimension range shall still be confirmed according to the order and Table 1 of the standard.
- When ordering based on core hardness requirements per 7.1.3, the end-quench data in Table 7/Table 8 are for reference only and cannot serve as an acceptance guarantee for the same order item.
- HRC is the hardness at the specified distance of the end-quench test specimen, not the overall hardness of the finished product, nor does it prove cold-heading suitability or part performance.
- A horizontal line in the original table indicates that the lower limit for that distance is not specified and shall remain blank; Shall not be treated as 0; no interpolation, extrapolation, or conformity determination shall be performed for distances not listed.
- The shown quenching temperature is the standard end-quench test condition and cannot be used as a production heat treatment process parameter or recommendation.
- Testing shall be according to EN ISO642 as cited in Table 10 (source standard specifies ISO642:1999); Test units shall be divided by heat, with 1 sample per unit and 1 test per sample; sampling for disputes shall otherwise follow Table 10.
+H normal hardenability band (7.1.2)
End-quench test condition temperature 850 ± 5 °C; This is not a production heat-treatment recommendation.
| Distance from quenched end (mm) | Lower limit (HRC) | Upper limit (HRC) |
|---|---|---|
| 1.5 | 57 | 65 |
| 3 | 56 | 65 |
| 5 | 55 | 64 |
| 7 | 54 | 64 |
| 9 | 53 | 63 |
| 11 | 51 | 63 |
| 13 | 50 | 63 |
| 15 | 48 | 62 |
| 20 | 44 | 62 |
| 25 | 41 | 62 |
| 30 | 37 | 61 |
| 35 | 35 | 60 |
| 40 | 34 | 60 |
| 45 | 33 | 59 |
| 50 | 32 | 58 |
+HH restricted hardenability band (7.1.4)
End-quench test condition temperature 850 ± 5 °C; This is not a production heat-treatment recommendation.
| Distance from quenched end (mm) | Lower limit (HRC) | Upper limit (HRC) |
|---|---|---|
| 1.5 | 60 | 65 |
| 3 | 59 | 65 |
| 5 | 58 | 64 |
| 7 | 57 | 64 |
| 9 | 56 | 63 |
| 11 | 55 | 63 |
| 13 | 54 | 63 |
| 15 | 53 | 62 |
| 20 | 50 | 62 |
| 25 | 48 | 62 |
| 30 | 45 | 61 |
| 35 | 43 | 60 |
| 40 | 43 | 60 |
| 45 | 42 | 59 |
| 50 | 41 | 58 |
51CrV4 · EN 10132-2021
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Spring steels
- Subcategory
- Spring steels
- Material form
- Narrow strip only
- Original record status
- Historical-edition reference
- Standard edition
- DIN EN 10132-4-2000(+AC:2002)
- Table / clause
- Analysis-type boundaries in Table 1 and note a, and Table 2
- PDF page references
- 1、6
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.7 ～ 1.1 |
| Cr | 0.9 ～ 1.2 |
| V | 0.1 ～ 0.25 |
| Ni | ≤ 0.4 (lower limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Mo | ≤ 0.1 (lower limit not stated) |
Applicability and limitations
The original target EN10132:2021 has not been verified; Currently uses only the historical same-grade reference in DIN EN 10132-4-2000(+AC:2002); this does not establish the requirements or scope of edition 2021 or conformity of supplied material. Official German DIN 2003-04 adopts EN10132-4:2000+AC:2002; PDF6, Table 1 gives heat-analysis mass fractions wt%. Cold-rolled narrow strip for heat-treatment applications; Covers spring steels and other special applications; it does not establish a basis for supply as cold-heading wire rod. Product-analysis tolerances in Table 2 are listed separately and are not mixed with the default heat-analysis range in Table 1; Within the same heat, ±tolerances must not be exceeded in both the lower and upper directions. Elements not listed in the table must not be intentionally added without purchaser consent, except to finish steelmaking; unspecified contents are not treated as zero. AC:2002 corrects the annealed/lightly skin-passed properties in Table 3; Only the complete Table 1 chemical composition was checked in this batch; mechanical properties require separate verification.
Verification notes
The original target EN10132:2021 has not been verified; Currently uses only the historical same-grade reference in DIN EN 10132-4-2000(+AC:2002); this does not establish the requirements or scope of edition 2021 or conformity of supplied material.51CrV4 · EN 10132-4-2002
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Spring steels
- Subcategory
- Spring steels
- Material form
- Reference record
- Original record status
- Historical-edition reference
- Standard edition
- DIN EN 10132-4-2000(+AC:2002)
- Table / clause
- Analysis-type boundaries in Table 1 and note a, and Table 2
- PDF page references
- 1、6
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.7 ～ 1.1 |
| Cr | 0.9 ～ 1.2 |
| V | 0.1 ～ 0.25 |
| Ni | ≤ 0.4 (lower limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Mo | ≤ 0.1 (lower limit not stated) |
Applicability and limitations
The chemical composition currently shown is transcribed from the original DIN EN 10132-4-2000(+AC:2002); The original record cites EN 10132-4-2002; that original edition remains unavailable, and differences between editions have not been confirmed. Official German DIN 2003-04 adopts EN10132-4:2000+AC:2002; PDF6, Table 1 gives heat-analysis mass fractions wt%. ; Cold-rolled narrow strip for heat-treatment applications; Covers spring steels and other special applications; it does not establish a basis for supply as cold-heading wire rod. ; Product-analysis tolerances in Table 2 are listed separately and are not mixed with the default heat-analysis range in Table 1; Within the same heat, ±tolerances must not be exceeded in both the lower and upper directions. ; Elements not listed in the table must not be intentionally added without purchaser consent, except to finish steelmaking; unspecified contents are not treated as zero. ; AC:2002 corrects the annealed/lightly skin-passed properties in Table 3; Only the complete Table 1 chemical composition was checked in this batch; mechanical properties require separate verification.
Verification notes
The chemical composition currently shown is transcribed from the original DIN EN 10132-4-2000(+AC:2002); The original record cites EN 10132-4-2002; that original edition remains unavailable, and differences between editions have not been confirmed.51CrV4 · EN 10250-3-1999
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Spring steels
- Subcategory
- Spring steels
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- EN 10250-3-1999
- Table / clause
- Table1 and note 1/2; Clauses 1, 3.1 and 3.2
- PDF page references
- 6、8、9
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.7 ～ 1.1 |
| P | ≤ 0.035 (lower limit not stated) |
| S | ≤ 0.035 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| V | 0.1 ～ 0.25 |
Applicability and limitations
Based on the original Table 1 and footnotes of EN10250-3:1999 as recorded in BS EN10250-3:2000, heat analysis mass fraction is in wt%.. ; This standard covers alloy special-steel open-die forgings, forged bars and ring-rolled products after pre-forging, supplied in the quenched-and-tempered condition.; This does not automatically establish a supply standard for cold-heading wire.. ; Table 1 Note 1 allows the manufacturer to add Al, Ti, V, Nb individually or in combination to control grain size.; No new numerical ranges are provided; values cannot be filled as zero or have upper limits arbitrarily determined.. Elements not listed in Table 1/2 shall not be intentionally added without the consent of the purchaser (except additions needed to finish steelmaking).. ; 3.1 requires the heat analysis composition to be in accordance with Table 1 and references A.7/A.8 of EN10250-1.; Clause 3.2: Apply product-analysis tolerances separately under Table 2 and Clause 9.2 of EN10250-1; do not directly expand the default heat-analysis range.. ; Currently, only chemical compositions, grade/steel number correspondences, and related range footnotes are confirmed.; It is not declared that all mechanical properties and the referenced Part 1 have been verified..
Verification notes
Both pages, all 21 rows and footnotes of Table 1 were visually checked; Each element and its separate font mapping were restored and compared with the original table cells, with matching results51CrV4 · NF EN 10083-3-2006
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Alloy steel
- Subcategory
- Alloy steel
- Material form
- Reference record
- Original record status
- Composition basis in the adopted standard verified
- Standard edition
- EN 10083-3-2006
- Table / clause
- Table 3 · Notes a–c
- PDF page references
- 1、18
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Mn | 0.7 ～ 1.1 |
| S | ≤ 0.025 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| V | 0.1 ～ 0.25 |
| Si | ≤ 0.4 (lower limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
Applicability and limitations
NF EN 10083-3:2006-12 corresponds to EN 10083-3:2006; Composition is read from the verified official original text of this EN version; see Data Basis for the actual source document. Composition is based on Table 3 of EN10083-3:2006 in the official English text of DIN EN10083-3:2007-01, heat analysis wt%. ; Note a: Elements not listed shall not be intentionally added without the purchaser's consent, except for additions needed to finish steelmaking and to enable boron to act on hardenability.; Unspecified values shall not be treated as zero. ; Note b: Small deviations are permitted where hardenability or quenched-and-tempered mechanical-property requirements apply, except for C/P/S; permitted deviations for other elements must not exceed Table 4.; Default heat analysis range shall not be expanded. ; For non-boron steels in this standard, Note c permits steel with improved machinability to be supplied on request: sulfur approximately 0.10%, with the Mn upper limit permitted to increase by an absolute 0.15%.; Approximate values are not default hard upper limits and must be determined by specific inquiry/order; they shall not be automatically mixed with ordinary grades. ; This standard covers alloy steels for quenching and tempering. Suitability for cold heading, wire-rod supply, annealing, surface and dimensions require separate confirmation; do not automatically add products..
Verification notes
The adoption relationship and original corresponding EN composition table have been checked; The complete main text of NF has not been checked page by page51CrV4 · EN ISO 683-2-2018
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Alloy steel
- Subcategory
- Alloy steel for quenching and tempering
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- EN ISO 683-2-2018
- Table / clause
- Table 3, notes a–d; clause 7.1.2; Table 4 limits
- PDF page references
- 22
- Unit
- Mass fraction (wt%)
- Analysis type
- Heat analysis; not product analysis
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Si | 0.1 ～ 0.4 |
| Mn | 0.6 ～ 1.0 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Cu | ≤ 0.4 (lower limit not stated) |
| Cr | 0.8 ～ 1.1 |
| V | 0.1 ～ 0.25 |
Applicability and limitations
Table 3 herein applies to heat (cast) analysis, mass fraction wt%; The permissible deviations for product analysis in Table 4 shall not be directly added to the limits in general Table 3. This document is EN ISO 683-2:2018, adopted without modification and accompanied by the text of ISO 683-2:2016; This record explicitly preserves the identity of EN ISO 683-2-2018 and shall not be called the ISO 2018 edition. Only the chemical composition and source conditions of Table 3 are verified; this does not constitute a guarantee of hardenability, heat treatment, mechanical properties, wire delivery state, or cold heading process. Note a: deviations in heat analysis apply only when hardenability requirements are specified; The deviation in C shall not exceed ±0.01%; P/S is excluded, and the other elements follow Table 4. General Table 3 shall not be automatically relaxed, nor shall H/HH/HL be merged with general grades. Note b: Steel with S increased to approximately 0.10% (including sulfide morphology control) or with the addition of Pb to improve machinability may be requested from the supplier; When S is increased, the upper limit of Mn may be increased by 0.15 percentage points. This agreement is not a default requirement, and approximate values shall not serve as precise automatic limits for this batch; if the Pb range is not listed, values shall not be borrowed from other standards. Original Note: Elements not listed shall not be intentionally added without the consent of the purchaser, except those required to complete the melting process; Elements introduced via scrap steel etc. shall be controlled. An unlisted value must not be assumed to be zero. Note d: lower Si is permitted, but other deoxidation methods must be used; The original text does not provide a uniform lower Si range; agreed conditions shall not automatically replace the range listed in 0.10–0.40%. S≤0.025%, V0.10–0.25% for this row; does not apply the general row S≤0.035%.
Verification notes
Original-image verification of all 25 physical rows and merged cells in Table 3; reuse existing independently cropped evidence for 5 same-source rows and 40 cells, transcribe the remaining cells individually from the source images, and record the two editions separately.51CrV4 · ISO 683-2-2016
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Alloy steel
- Subcategory
- Alloy steel for quenching and tempering
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- ISO 683-2-2016
- Table / clause
- Table 3, notes a–d; clause 7.1.2; Table 4 limits
- PDF page references
- 22
- Unit
- Mass fraction (wt%)
- Analysis type
- Heat analysis; not product analysis
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Si | 0.1 ～ 0.4 |
| Mn | 0.6 ～ 1.0 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Cu | ≤ 0.4 (lower limit not stated) |
| Cr | 0.8 ～ 1.1 |
| V | 0.1 ～ 0.25 |
Applicability and limitations
Table 3 herein applies to heat (cast) analysis, mass fraction wt%; The permissible deviations for product analysis in Table 4 shall not be directly added to the limits in general Table 3. This document is EN ISO 683-2:2018, adopted without modification and accompanied by the text of ISO 683-2:2016; This record explicitly preserves the identity of ISO 683-2-2016 and shall not be called the ISO 2018 edition. Only the chemical composition and source conditions of Table 3 are verified; this does not constitute a guarantee of hardenability, heat treatment, mechanical properties, wire delivery state, or cold heading process. Note a: deviations in heat analysis apply only when hardenability requirements are specified; The deviation in C shall not exceed ±0.01%; P/S is excluded, and the other elements follow Table 4. General Table 3 shall not be automatically relaxed, nor shall H/HH/HL be merged with general grades. Note b: Steel with S increased to approximately 0.10% (including sulfide morphology control) or with the addition of Pb to improve machinability may be requested from the supplier; When S is increased, the upper limit of Mn may be increased by 0.15 percentage points. This agreement is not a default requirement, and approximate values shall not serve as precise automatic limits for this batch; if the Pb range is not listed, values shall not be borrowed from other standards. Original Note: Elements not listed shall not be intentionally added without the consent of the purchaser, except those required to complete the melting process; Elements introduced via scrap steel etc. shall be controlled. An unlisted value must not be assumed to be zero. Note d: lower Si is permitted, but other deoxidation methods must be used; The original text does not provide a uniform lower Si range; agreed conditions shall not automatically replace the range listed in 0.10–0.40%. S≤0.025%, V0.10–0.25% for this row; does not apply the general row S≤0.035%.
Verification notes
Original-image verification of all 25 physical rows and merged cells in Table 3; reuse existing independently cropped evidence for 5 same-source rows and 40 cells, transcribe the remaining cells individually from the source images, and record the two editions separately.51CrV4 · DIN EN 10083-3-2007
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- DIN EN 10083-3-2007
- Table / clause
- Table 3 · Notes a–c
- PDF page references
- 1、18
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Mn | 0.7 ～ 1.1 |
| S | ≤ 0.025 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| V | 0.1 ～ 0.25 |
| Si | ≤ 0.4 (lower limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
Applicability and limitations
Composition is based on Table 3 of EN10083-3:2006 in the official English text of DIN EN10083-3:2007-01, heat analysis wt%. ; Note a: Elements not listed shall not be intentionally added without the purchaser's consent, except for additions needed to finish steelmaking and to enable boron to act on hardenability.; Unspecified values shall not be treated as zero. ; Note b: Small deviations are permitted where hardenability or quenched-and-tempered mechanical-property requirements apply, except for C/P/S; permitted deviations for other elements must not exceed Table 4.; Default heat analysis range shall not be expanded. ; For non-boron steels in this standard, Note c permits steel with improved machinability to be supplied on request: sulfur approximately 0.10%, with the Mn upper limit permitted to increase by an absolute 0.15%.; Approximate values are not default hard upper limits and must be determined by specific inquiry/order; they shall not be automatically mixed with ordinary grades. ; This standard covers alloy steels for quenching and tempering. Suitability for cold heading, wire-rod supply, annealing, surface and dimensions require separate confirmation; do not automatically add products..
Verification notes
Official English source cover, all 28 grades in Table 3 and notes a–c visually checked.Permitted product-analysis deviations (must not be added to heat-analysis limits)
DIN EN10083-3:2007-01 (adopting EN10083-3:2006) · Table 4 and notes a/b, 7.1.2.2; Product analysis specified at ordering follows A.5 · PDF pages 11, 19, 55 · mass fraction wt%; Deviations are expressed in percentage points of mass percentage
The complete standard tolerance table applies only to elements specified in the original table for this grade and to the corresponding content/sulfur-range conditions; it does not widen heat-analysis composition, carbon equivalent or reverse-search ranges.
| Element | Specified maximum heat-analysis content, wt% | Lower deviation, percentage points | Upper deviation, percentage points | Applicable conditions |
|---|---|---|---|---|
| C | ≤0.55 | -0.02 | +0.02 | Select the cast-analysis maximum-content band specified in the original table |
| Si | ≤0.40 | The original table does not state a negative deviation | +0.03 | Select the cast-analysis maximum-content band specified in the original table |
| Mn | ≤1.00 | -0.04 | +0.04 | Select the cast-analysis maximum-content band specified in the original table |
| Mn | >1.00≤1.70 | -0.05 | +0.05 | Select the cast-analysis maximum-content band specified in the original table |
| P | ≤0.025 | The original table does not state a negative deviation | +0.005 | Select the cast-analysis maximum-content band specified in the original table |
| S | ≤0.040 | The original table does not state a negative deviation | +0.005 | Only the sulfur upper limit is specified; Note b’s full 0.020–0.040% range is not applied. |
| Cr | ≤2.00 | -0.05 | +0.05 | Select the cast-analysis maximum-content band specified in the original table |
| Cr | >2.00≤2.20 | -0.1 | +0.1 | Select the cast-analysis maximum-content band specified in the original table |
| Mo | ≤0.30 | -0.03 | +0.03 | Select the cast-analysis maximum-content band specified in the original table |
| Mo | >0.30≤0.60 | -0.04 | +0.04 | Select the cast-analysis maximum-content band specified in the original table |
| Ni | ≤2.00 | -0.05 | +0.05 | Select the cast-analysis maximum-content band specified in the original table |
| Ni | >2.00≤4.3 | -0.07 | +0.07 | Select the cast-analysis maximum-content band specified in the original table |
| V | ≤0.25 | -0.02 | +0.02 | Select the cast-analysis maximum-content band specified in the original table |
| B | ≤0.0050 | -0.0003 | +0.0003 | Select the cast-analysis maximum-content band specified in the original table |
| S | ≤0.040 | -0.005 | +0.005 | Only when Table 3 heat analysis explicitly specifies the full S range of 0.020–0.040% (Table 4, Note b). |
- Table 4 Note a: For a same-heat tolerance, deviation is permitted in only one direction—above the upper limit or below the lower limit—not both.
- S product-analysis tolerance is usually only +0.005. Note b permits ±0.005 only for steels whose heat analysis explicitly specifies the full 0.020–0.040% range; do not apply Note b based only on the maximum S value.
- Clause 7.1.2.2 requires product analysis to be specified at ordering and refers to A.5; without a heat-lot test report, this table does not prove that the actual product conforms.
- A.5: one product analysis per heat, limited to elements specified for the grade; sampling per EN ISO 14284. For disputes, reference methods are the European standards listed in CR 10261.
This is a complete standard deviation table and does not imply that every element for this grade is specified; Elements not listed are not added on the basis of this table. Symmetric deviation for the same heat is permitted in only one direction, either upward or downward; Asymmetric deviation for Pb is only found in the Pb row of EN10087 and cannot be applied to other standards where Pb is not listed. Do not automatically expand heat analysis composition, carbon equivalent, or reverse-lookup ranges.
51CrV4 · DIN EN 10132-4-2000(+AC:2002)
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material form
- Narrow strip only
- Original record status
- Original standard verified
- Standard edition
- DIN EN 10132-4-2000(+AC:2002)
- Table / clause
- Analysis-type boundaries in Table 1 and note a, and Table 2
- PDF page references
- 1、6
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.7 ～ 1.1 |
| Cr | 0.9 ～ 1.2 |
| V | 0.1 ～ 0.25 |
| Ni | ≤ 0.4 (lower limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Mo | ≤ 0.1 (lower limit not stated) |
Applicability and limitations
Official German DIN 2003-04 adopts EN10132-4:2000+AC:2002; PDF6, Table 1 gives heat-analysis mass fractions wt%. ; Cold-rolled narrow strip for heat-treatment applications; Covers spring steels and other special applications; it does not establish a basis for supply as cold-heading wire rod. ; Product-analysis tolerances in Table 2 are listed separately and are not mixed with the default heat-analysis range in Table 1; Within the same heat, ±tolerances must not be exceeded in both the lower and upper directions. ; Elements not listed in the table must not be intentionally added without purchaser consent, except to finish steelmaking; unspecified contents are not treated as zero. ; AC:2002 corrects the annealed/lightly skin-passed properties in Table 3; Only the complete Table 1 chemical composition was checked in this batch; mechanical properties require separate verification.
Verification notes
All 15 rows and footnotes in the official original text were visually checked51CrV4 · ISO 683-6:2023 (original BS ISO national adoption)
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Spring steels
- Subcategory
- Spring steels
- Material form
- Round bars, flat bars and wire rod
- Original record status
- Original standard verified
- Standard edition
- ISO 683-6:2023 / BS ISO 683-6:2023
- Table / clause
- Table 4, footnotes a–c; Table 5; 7.2
- PDF page references
- 20、21
- Unit
- Mass fraction (wt%)
- Analysis type
- Heat analysis
Carbon-equivalent reference
Estimates are presented separately for each applicable composition condition. Match the actual ordering conditions; ranges must not be combined.
Ordinary heat analysis: Table 4 (without +H/+HH)
+H heat analysis: Table 4, note b and Table 5 (C±0.01; P/S is not widened)
+HH heat analysis: Table 4, note b and Table 5 (C±0.01; P/S is not widened)
Composition record (conditional branches apply; this is not an unconditional requirement)
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.6 ～ 1.0 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Cr | 0.8 ～ 1.1 |
| V | 0.1 ～ 0.25 |
Applicability and limitations
Original BS ISO 683-6:2023 document; ISO fourth edition, 2023-11.; Table 4 PDF page 20/printed page 12, Table 5 PDF page 21/printed page 13. Heat analysis wt%, must select ordinary or +H/+HH conditions; Cu+10Sn≤0.60%. Do not substitute 0 for unlisted elements. Product analysis and mechanical-property conditions require separate verification; this is not a supply guarantee from the company..
Composition conditions
- Table 4 is heat analysis, mass fraction %; Dashes or unspecified elements must not be assumed to have a value of 0..
- Original image last column header Cu+Sn, cell explicitly Cu+10Sn≤0.60%; Retain as weighted formula per main text, do not split into independent limits.
- Table 4 Note b: +H/+HH follow the permitted deviations in Table 5, with C specifically not exceeding ±0.01%; P/S not relaxed; Unselected conditions shall not be calculated by default.
- Product analysis shall be verified separately per Table 5; its C/P/S deviations shall not be directly applied to the current heat analysis branch; For the same heat, the same element shall not simultaneously exhibit deviations exceeding the upper limit and falling below the lower limit.
- Note c allows lower P/S upper limits by agreement; values shall not be automatically changed if no agreement is provided; Intentional addition of elements not listed requires agreement (except additions needed to finish steelmaking).
- For springs intended for quenching and tempering.; Heat treatment, hardness, hardenability, dimensions and surface conditions require verification under the main text; do not collapse mechanical properties across conditions in this batch..
Combined limits
- Combined-element limits
- Requirement
- Cu + 10×Sn
- Element coefficient
- Cu
- 1
- Sn
- 10
- Upper limit
- 0.6
- Elements requiring measured values from the same heat
- Cu
- Sn
Original condition-branch records
Ordinary heat analysis: Table 4 (without +H/+HH)
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.6 ～ 1.0 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Cr | 0.8 ～ 1.1 |
| V | 0.1 ～ 0.25 |
+H heat analysis: Table 4, note b and Table 5 (C±0.01; P/S is not widened)
| Element | Composition requirement |
|---|---|
| C | 0.46 ～ 0.56 |
| Si | ≤ 0.43 (lower limit not stated) |
| Mn | 0.56 ～ 1.04 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Cr | 0.75 ～ 1.15 |
| V | 0.08 ～ 0.27 |
+HH heat analysis: Table 4, note b and Table 5 (C±0.01; P/S is not widened)
| Element | Composition requirement |
|---|---|
| C | 0.46 ～ 0.56 |
| Si | ≤ 0.43 (lower limit not stated) |
| Mn | 0.56 ～ 1.04 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Cr | 0.75 ～ 1.15 |
| V | 0.08 ～ 0.27 |
A condition branch must be selected
YesVerification notes
All ten rows in original Table 4 were checked cell by cell; Table 5 and footnote conditions are retained separately.51CrV4 · DIN 17350-1980
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Alloy steel
- Subcategory
- Alloy steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Cr | 0.9 ～ 1.2 |
| Mn | 0.8 ～ 1.1 |
| P | ≤ 0.03 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | 0.15 ～ 0.35 |
| V | 0.1 ～ 0.2 |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
51CrV4 · ISO 683-1-1987
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Alloy steel
- Subcategory
- Alloy steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Cr | 0.8 ～ 1.1 |
| Mn | 0.6 ～ 1 |
| P | ≤ 0.035 (lower limit not stated) |
| S | ≤ 0.035 (lower limit not stated) |
| V | 0.1 ～ 0.25 |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
51CrV4 · ISO 683-14
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Spring steels
- Subcategory
- Spring steels
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Cr | 0.9 ～ 1.2 |
| Mn | 0.7 ～ 1.1 |
| Si | ≤ 0.4 (lower limit not stated) |
| V | 0.1 ～ 0.25 |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
51CrV4 · ISO 683-18
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Alloy steel
- Subcategory
- Alloy steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Cr | 0.8 ～ 1.1 |
| Cu | ≤ 0.4 (lower limit not stated) |
| Mn | 0.6 ～ 1 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Si | 0.1 ～ 0.4 |
| V | 0.1 ～ 0.25 |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
51CrV4 · DIN EN 10277:2018-09
Original table in an informative annex verified; normative composition requirements and edition still require verification. For reference only.
- Material category
- Alloy steel
- Subcategory
- Alloy steel
- Material form
- Reference record
- Composition basis
- Heat analysis in an informative annex; for reference only
- Verification status
- Original table in an informative annex verified; normative composition requirements and edition still require verification
- Standard edition
- DIN EN 10277:2018-09
- Table / clause
- Informative Annex A.4
- PDF page references
- 47
- Unit
- mass fraction (wt%)
- Analysis type
- Heat analysis (informative reference)
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.47 ～ 0.55 |
| Si | 0.1 ～ 0.4 |
| Mn | 0.6 ～ 1.0 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Cr | 0.8 ～ 1.1 |
| Cu | ≤ 0.4 (lower limit not stated) |
| V | 0.1 ～ 0.25 |
Applicability and limitations
The original informative-annex table has been checked and is for reference only. Clause 7.1.2 requires chemical composition to be determined under the cited standard; the formal normative composition and applicable edition remain unverified. Do not use it as a delivery guarantee, a reverse-search acceptance criterion or a basis for standard-range carbon equivalent.
Composition conditions
- The original informative-annex table has been checked and is for reference only. Clause 7.1.2 requires chemical composition to be determined under the cited standard; the formal normative composition and applicable edition remain unverified. Do not use it as a delivery guarantee, a reverse-search acceptance criterion or a basis for standard-range carbon equivalent.
- Footnote b: A quotation is required to raise S to about 0.10% or add Pb; when S is increased, the Mn upper limit may be raised by 0.15%, but this is not automatic.
- Footnote c: Reducing Si requires other deoxidation measures.
- Unlisted elements shall not be intentionally added without the buyer’s consent.
Conditional requirement
- Footnote
- Informative boundary
- Source conditions
- The original informative annex table has been checked and is for reference only; Main-text 7.1.2 requires chemical composition to be determined under the referenced standards; the normative composition and applicable editions still require verification. It must not be used as a delivery guarantee, reverse-matching criterion or basis for carbon equivalent calculated from standard composition ranges. Main-text references: EN ISO 683-1 and EN ISO 683-2 (undated references; applicable editions awaiting verification).
- Footnote
- Original-table condition 1
- Source conditions
- Footnote b: A quotation is required to raise S to about 0.10% or add Pb; when S is increased, the Mn upper limit may be raised by 0.15%, but this is not automatic.
- Footnote
- Original-table condition 2
- Source conditions
- Footnote c: Reducing Si requires other deoxidation measures.
- Footnote
- Original-table condition 3
- Source conditions
- Unlisted elements shall not be intentionally added without the buyer’s consent.