18CRNIMO7-6
4 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 18CRNIMO7-6 →18CrNiMo7-6 · ISO 683-17-2014
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Bearing steel
- Subcategory
- Bearing steel
- Material form
- Reference record
- Composition basis
- Standard heat-analysis composition
- Original record status
- Original standard verified
- Standard edition
- ISO 683-17-2014
- Table / clause
- Table 3 and footnotes a–k
- PDF page references
- 14、16
- Unit
- mass fraction (wt%)
- Analysis type
- Heat analysis; oxygen analysis is separately subject to the manufacturer’s choice
Carbon-equivalent reference
Estimates are presented separately for each applicable composition condition. Match the actual ordering conditions; ranges must not be combined.
Default heat-analysis composition in the original table; Manufacturer option: oxygen in heat analysis ≤0.002%
Applicability of the three welding carbon-equivalent formulas has not been confirmed individually for each bearing-steel group. Only composition is shown; no carbon equivalent from standard ranges is automatically provided.
Default heat-analysis composition in the original table; Machinability by agreement: S≤0.030%; Manufacturer option: oxygen in heat analysis ≤0.002%
Applicability of the three welding carbon-equivalent formulas has not been confirmed individually for each bearing-steel group. Only composition is shown; no carbon equivalent from standard ranges is automatically provided.
Default heat-analysis composition in the original table; Manufacturer option: oxygen in product analysis ≤0.002%; not for judging heat-analysis oxygen
Applicability of the three welding carbon-equivalent formulas has not been confirmed individually for each bearing-steel group. Only composition is shown; no carbon equivalent from standard ranges is automatically provided.
Default heat-analysis composition in the original table; Machinability by agreement: S≤0.030%; Manufacturer option: oxygen in product analysis ≤0.002%; not for judging heat-analysis oxygen
Applicability of the three welding carbon-equivalent formulas has not been confirmed individually for each bearing-steel group. Only composition is shown; no carbon equivalent from standard ranges is automatically provided.
Composition record (conditional branches apply; this is not an unconditional requirement)
| Element | Composition requirement |
|---|---|
| C | 0.15 ～ 0.21 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.5 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 1.5 ～ 1.8 |
| Mo | 0.25 ～ 0.35 |
| Ni | 1.4 ～ 1.7 |
| Al | ≤ 0.05 (lower limit not stated) |
| Cu | ≤ 0.3 (lower limit not stated) |
Applicability and limitations
ISO 683-17:2014 Table 3 and footnotes checked against the original; Table 3 specifies heat analysis, mass fraction wt%; unspecified elements are not treated as zero. Product-analysis deviations are addressed separately in Table 4 and do not expand the default heat-analysis limits.
Composition conditions
- Original Table 3: ladle analysis, mass fraction wt%; unspecified elements are not treated as zero. Product analysis tolerances are specified separately in Table 4 and do not widen the default ladle-analysis limits.
- Elements not listed shall not be intentionally added without the purchaser’s agreement, except as needed to complete steelmaking.
- Footnote b: small deviations in heat analysis are permitted only for grades with hardenability requirements, excluding P/S. The deviation in C must not exceed ±0.01%, and deviations for other elements must not exceed Table 4. Default heat-analysis limits are not automatically widened.
- Classification as bearing steel does not guarantee suitability for cold heading, mechanical properties, or supply.
- Footnote f: Deoxidation or inclusion control using Ca or a Ca alloy requires the purchaser’s explicit approval. Footnote h: The maximum Ti content must be agreed by inquiry; no unlisted value is invented.
- Footnote g: the manufacturer may choose heat or product analysis for oxygen. Retain the product-oxygen requirement separately; do not treat a product-analysis value as a heat-analysis value.
- Only this row marked “e” in the table: where machinability is the priority, S ≤ 0.030% may be agreed; otherwise the default applies.
- Applicability of the three welding carbon-equivalent formulas has not been confirmed individually for each bearing-steel group. Only composition is shown; no carbon equivalent from standard ranges is automatically provided.
Conditional requirement
- Footnote
- Original-table condition 1
- Source conditions
- Original Table 3: ladle analysis, mass fraction wt%; unspecified elements are not treated as zero. Product analysis tolerances are specified separately in Table 4 and do not widen the default ladle-analysis limits.
- Footnote
- Original-table condition 2
- Source conditions
- Elements not listed shall not be intentionally added without the purchaser’s agreement, except as needed to complete steelmaking.
- Footnote
- Original-table condition 3
- Source conditions
- Footnote b: small deviations in heat analysis are permitted only for grades with hardenability requirements, excluding P/S. The deviation in C must not exceed ±0.01%, and deviations for other elements must not exceed Table 4. Default heat-analysis limits are not automatically widened.
- Footnote
- Original-table condition 4
- Source conditions
- Classification as bearing steel does not guarantee suitability for cold heading, mechanical properties, or supply.
- Footnote
- Original-table condition 5
- Source conditions
- Footnote f: Deoxidation or inclusion control using Ca or a Ca alloy requires the purchaser’s explicit approval. Footnote h: The maximum Ti content must be agreed by inquiry; no unlisted value is invented.
- Footnote
- Original-table condition 6
- Source conditions
- Footnote g: the manufacturer may choose heat or product analysis for oxygen. Retain the product-oxygen requirement separately; do not treat a product-analysis value as a heat-analysis value.
- Footnote
- Original-table condition 7
- Source conditions
- Only this row marked “e” in the table: where machinability is the priority, S ≤ 0.030% may be agreed; otherwise the default applies.
- Footnote
- Original-table condition 8
- Source conditions
- Applicability of the three welding carbon-equivalent formulas has not been confirmed individually for each bearing-steel group. Only composition is shown; no carbon equivalent from standard ranges is automatically provided.
Original condition-branch records
Default heat-analysis composition in the original table; Manufacturer option: oxygen in heat analysis ≤0.002%
| Element | Composition requirement |
|---|---|
| C | 0.15 ～ 0.21 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.5 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 1.5 ～ 1.8 |
| Mo | 0.25 ～ 0.35 |
| Ni | 1.4 ～ 1.7 |
| Al | ≤ 0.05 (lower limit not stated) |
| Cu | ≤ 0.3 (lower limit not stated) |
| O | ≤ 0.002 (lower limit not stated) |
- Oxygen-analysis conditions
- Heat analysis
Default heat-analysis composition in the original table; Machinability by agreement: S≤0.030%; Manufacturer option: oxygen in heat analysis ≤0.002%
| Element | Composition requirement |
|---|---|
| C | 0.15 ～ 0.21 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.5 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Cr | 1.5 ～ 1.8 |
| Mo | 0.25 ～ 0.35 |
| Ni | 1.4 ～ 1.7 |
| Al | ≤ 0.05 (lower limit not stated) |
| Cu | ≤ 0.3 (lower limit not stated) |
| O | ≤ 0.002 (lower limit not stated) |
- Oxygen-analysis conditions
- Heat analysis
Default heat-analysis composition in the original table; Manufacturer option: oxygen in product analysis ≤0.002%; not for judging heat-analysis oxygen
| Element | Composition requirement |
|---|---|
| C | 0.15 ～ 0.21 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.5 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 1.5 ～ 1.8 |
| Mo | 0.25 ～ 0.35 |
| Ni | 1.4 ～ 1.7 |
| Al | ≤ 0.05 (lower limit not stated) |
| Cu | ≤ 0.3 (lower limit not stated) |
- Oxygen-analysis conditions
- Product analysis
- Separate product oxygen-analysis requirement
- Element
- O
- Upper limit
- 0.002
- Unit
- wt%
- Analysis type
- Product analysis
Default heat-analysis composition in the original table; Machinability by agreement: S≤0.030%; Manufacturer option: oxygen in product analysis ≤0.002%; not for judging heat-analysis oxygen
| Element | Composition requirement |
|---|---|
| C | 0.15 ～ 0.21 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.5 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Cr | 1.5 ～ 1.8 |
| Mo | 0.25 ～ 0.35 |
| Ni | 1.4 ～ 1.7 |
| Al | ≤ 0.05 (lower limit not stated) |
| Cu | ≤ 0.3 (lower limit not stated) |
- Oxygen-analysis conditions
- Product analysis
- Separate product oxygen-analysis requirement
- Element
- O
- Upper limit
- 0.002
- Unit
- wt%
- Analysis type
- Product analysis
A condition branch must be selected
YesVerification notes
This batch was reconciled against the 2015 DIN German original images and 2014 ISO English original images; edition-specific sources were kept separate, and outdated grades, values and footnote scopes were corrected.18CrNiMo7-6 · DIN EN 10084-2008
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 10084-2008
- Table / clause
- Table 3, notes a–d
Carbon-equivalent reference
IIW / CEV：0.6767–0.9033Known-element contribution; incomplete value; missing V, Cu CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15; an engineering estimate of welding cold-cracking susceptibility for carbon and low-alloy steels.
Pcm（Ito–Bessyo）：0.2900–0.4100Known-element contribution; incomplete value; missing Cu, V, B Pcm = C + Si/30 + (Mn + Cu + Cr)/20 + Ni/60 + Mo/15 + V/10 + 5B; mainly used for low-carbon low-alloy steels, particularly modern low-carbon pipeline steels; more relevant when C is approximately no higher than 0.11%.
CET：0.3350–0.4675Known-element contribution; incomplete value; missing Cu CET = C + (Mn + Mo)/10 + (Cr + Cu)/20 + Ni/40; used in welding preheat assessment for ferritic steels, subject to the applicability conditions of EN 1011-2.
Composition
| Element | Composition requirement |
|---|---|
| C | 0.15 ～ 0.21 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.5 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.035 (lower limit not stated) |
| Cr | 1.5 ～ 1.8 |
| Mo | 0.25 ～ 0.35 |
| Ni | 1.4 ～ 1.7 |
Applicability and limitations
Ladle analysis, mass fraction wt%; the DIN EN 10084:2008-06 cover expressly identifies the German edition of EN 10084:2008; Table 3 follows that source text. Note b: minor composition deviations associated with hardenability requirements must be checked separately against Table 4 and the applicable conditions; they do not widen default ranges, and no such relaxation applies to P/S. Note c: higher S (approximately up to 0.10%) or Pb may be requested for improved machinability; in the higher-S case, the Mn upper limit may increase by 0.15 percentage points. Actual agreed values are not given; do not invent them or apply them automatically. Note d: B in this table improves toughness in the hardened case, not hardenability. Unlisted elements must not be intentionally added without purchaser approval (except as necessary during steelmaking); unspecified does not mean zero. A delivery standard for case-hardening steel does not mean all conditions are suitable for cold heading; verify mechanical properties, hardness and hardenability separately.
Verification notes
Original German Table 3 and its footnotes checkedJominy end-quench hardenability (conditional requirements)
EN 10084:2008 · DIN EN 10084:2008-06, cover explicitly states German version of EN 10084:2008 · Table 5/Table 6/Table 8/Table 9; 7.1.2 and 8.2.2 · PDF pages 7, 10, 12, 18, 20, 22, 23
- 7.1.2: Unless otherwise agreed, Table 5 normal +H hardenability requirements apply to alloy steels in this standard; restricted +HH/+HL bands in Table 6 must be agreed at enquiry/order. Viewing a selection is not contractual confirmation and does not change the ordinary grade designation or order conditions.
- HRC is hardness at a specified distance on a Jominy end-quench specimen, not bulk finished-part hardness, cold-heading acceptance, supply capability or part-performance guarantee.
- Horizontal lines preserve unspecified upper and lower limits and shall not be treated as 0; Do not automatically interpolate, extrapolate, or assess compliance at unlisted distances.
- Table 8 temperatures are austenitizing conditions for the Jominy specimen, not production heat-treatment recommendations. No temperature tolerance is given; do not add ±5°C. Table 8 Note a holding time is indicative only, not a guaranteed requirement.
- 8.2.2 permits the manufacturer to demonstrate hardenability by calculation where a suitable formula exists; the manufacturer chooses the method and, when agreed at enquiry/order, supplies sufficient information for customer review. This tool has not implemented or certified such calculations.
- If no applicable formula exists or a dispute arises, use the end-quench test in EN ISO 642 and Table 9; use Table 8 specimen quenching temperature and the C scale of EN ISO 6508-1 for hardness. The source cites ISO 642:1999 and ISO 6508-1:2005; do not update the cited years.
- Table 9: When inspection certificates and corresponding requirements of Table 1 are applicable, heat C shall be the test unit, with 1 sample per 1 test. When dimensions do not allow for the preparation of end-quench specimens, the conditions for proving hardenability must be agreed upon; In other cases, unless otherwise agreed, the specimen preparation method shall be determined by the manufacturer.
- Table 9 sampling note b is printed “20 m”, conflicting in units with “20 mm” in note c; defer automatic interpretation of that sampling depth. Do not silently correct it or use it as a specimen-preparation instruction.
- The DIN original explicitly adopts EN10084:2008; display only according to this EN technical source; The supplementation of hardenability in this batch shall not be used to claim that the NF standard cover or other standard identities have been verified.
+H Normal hardenability band (7.1.2; applies to alloy steels in this standard unless otherwise agreed)
End-quench test temperature 860 °C (tolerance not stated in the source); this is not a production heat-treatment recommendation.
| Distance from quenched end (mm) | Lower limit (HRC) | Upper limit (HRC) |
|---|---|---|
| 1.5 | 40 | 48 |
| 3 | 40 | 48 |
| 5 | 39 | 48 |
| 7 | 38 | 48 |
| 9 | 37 | 47 |
| 11 | 36 | 47 |
| 13 | 35 | 46 |
| 15 | 34 | 46 |
| 20 | 32 | 44 |
| 25 | 31 | 43 |
| 30 | 30 | 42 |
| 35 | 29 | 41 |
| 40 | 29 | 41 |
+HH Restricted hardenability band (Table 6; agreement at enquiry and order required)
End-quench test temperature 860 °C (tolerance not stated in the source); this is not a production heat-treatment recommendation.
| Distance from quenched end (mm) | Lower limit (HRC) | Upper limit (HRC) |
|---|---|---|
| 1.5 | 43 | 48 |
| 3 | 43 | 48 |
| 5 | 42 | 48 |
| 7 | 41 | 48 |
| 9 | 40 | 47 |
| 11 | 40 | 47 |
| 13 | 39 | 46 |
| 15 | 38 | 46 |
| 20 | 36 | 44 |
| 25 | 35 | 43 |
| 30 | 34 | 42 |
| 35 | 33 | 41 |
| 40 | 33 | 41 |
+HL Restricted hardenability band (Table 6; agreement at enquiry and order required)
End-quench test temperature 860 °C (tolerance not stated in the source); this is not a production heat-treatment recommendation.
| Distance from quenched end (mm) | Lower limit (HRC) | Upper limit (HRC) |
|---|---|---|
| 1.5 | 40 | 45 |
| 3 | 40 | 45 |
| 5 | 39 | 45 |
| 7 | 38 | 45 |
| 9 | 37 | 44 |
| 11 | 36 | 43 |
| 13 | 35 | 42 |
| 15 | 34 | 42 |
| 20 | 32 | 40 |
| 25 | 31 | 39 |
| 30 | 30 | 38 |
| 35 | 29 | 37 |
| 40 | 29 | 37 |
18CrNiMo7-6 · DIN EN ISO 683-17-2015
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Bearing steel
- Subcategory
- Bearing steel
- Material form
- Reference record
- Composition basis
- Standard heat-analysis composition
- Original record status
- Original standard verified
- Standard edition
- DIN EN ISO 683-17:2015-02
- Table / clause
- Table 3 and footnotes a–k
- PDF page references
- 18、19
- Unit
- mass fraction (wt%)
- Analysis type
- Heat analysis; oxygen analysis is separately subject to the manufacturer’s choice
Carbon-equivalent reference
Estimates are presented separately for each applicable composition condition. Match the actual ordering conditions; ranges must not be combined.
Default heat-analysis composition in the original table; Manufacturer option: oxygen in heat analysis ≤0.002%
Applicability of the three welding carbon-equivalent formulas has not been confirmed individually for each bearing-steel group. Only composition is shown; no carbon equivalent from standard ranges is automatically provided.
Default heat-analysis composition in the original table; Machinability by agreement: S≤0.030%; Manufacturer option: oxygen in heat analysis ≤0.002%
Applicability of the three welding carbon-equivalent formulas has not been confirmed individually for each bearing-steel group. Only composition is shown; no carbon equivalent from standard ranges is automatically provided.
Default heat-analysis composition in the original table; Manufacturer option: oxygen in product analysis ≤0.002%; not for judging heat-analysis oxygen
Applicability of the three welding carbon-equivalent formulas has not been confirmed individually for each bearing-steel group. Only composition is shown; no carbon equivalent from standard ranges is automatically provided.
Default heat-analysis composition in the original table; Machinability by agreement: S≤0.030%; Manufacturer option: oxygen in product analysis ≤0.002%; not for judging heat-analysis oxygen
Applicability of the three welding carbon-equivalent formulas has not been confirmed individually for each bearing-steel group. Only composition is shown; no carbon equivalent from standard ranges is automatically provided.
Composition record (conditional branches apply; this is not an unconditional requirement)
| Element | Composition requirement |
|---|---|
| C | 0.15 ～ 0.21 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.5 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 1.5 ～ 1.8 |
| Mo | 0.25 ～ 0.35 |
| Ni | 1.4 ～ 1.7 |
| Al | ≤ 0.05 (lower limit not stated) |
| Cu | ≤ 0.3 (lower limit not stated) |
Applicability and limitations
DIN EN ISO 683-17:2015-02 Table 3 and footnotes checked against the original; the original Table 3 specifies heat analysis, mass fraction wt%; unspecified elements are not treated as zero. Product-analysis deviations are addressed separately in Table 4 and do not expand the default heat-analysis limits.
Composition conditions
- Original Table 3: ladle analysis, mass fraction wt%; unspecified elements are not treated as zero. Product analysis tolerances are specified separately in Table 4 and do not widen the default ladle-analysis limits.
- Elements not listed shall not be intentionally added without the purchaser’s agreement, except as needed to complete steelmaking.
- Footnote b: small deviations in heat analysis are permitted only for grades with hardenability requirements, excluding P/S. The deviation in C must not exceed ±0.01%, and deviations for other elements must not exceed Table 4. Default heat-analysis limits are not automatically widened.
- Classification as bearing steel does not guarantee suitability for cold heading, mechanical properties, or supply.
- Footnote f: Deoxidation or inclusion control using Ca or a Ca alloy requires the purchaser’s explicit approval. Footnote h: The maximum Ti content must be agreed by inquiry; no unlisted value is invented.
- Footnote g: the manufacturer may choose heat or product analysis for oxygen. Retain the product-oxygen requirement separately; do not treat a product-analysis value as a heat-analysis value.
- Only this row marked “e” in the table: where machinability is the priority, S ≤ 0.030% may be agreed; otherwise the default applies.
- Applicability of the three welding carbon-equivalent formulas has not been confirmed individually for each bearing-steel group. Only composition is shown; no carbon equivalent from standard ranges is automatically provided.
Conditional requirement
- Footnote
- Original-table condition 1
- Source conditions
- Original Table 3: ladle analysis, mass fraction wt%; unspecified elements are not treated as zero. Product analysis tolerances are specified separately in Table 4 and do not widen the default ladle-analysis limits.
- Footnote
- Original-table condition 2
- Source conditions
- Elements not listed shall not be intentionally added without the purchaser’s agreement, except as needed to complete steelmaking.
- Footnote
- Original-table condition 3
- Source conditions
- Footnote b: small deviations in heat analysis are permitted only for grades with hardenability requirements, excluding P/S. The deviation in C must not exceed ±0.01%, and deviations for other elements must not exceed Table 4. Default heat-analysis limits are not automatically widened.
- Footnote
- Original-table condition 4
- Source conditions
- Classification as bearing steel does not guarantee suitability for cold heading, mechanical properties, or supply.
- Footnote
- Original-table condition 5
- Source conditions
- Footnote f: Deoxidation or inclusion control using Ca or a Ca alloy requires the purchaser’s explicit approval. Footnote h: The maximum Ti content must be agreed by inquiry; no unlisted value is invented.
- Footnote
- Original-table condition 6
- Source conditions
- Footnote g: the manufacturer may choose heat or product analysis for oxygen. Retain the product-oxygen requirement separately; do not treat a product-analysis value as a heat-analysis value.
- Footnote
- Original-table condition 7
- Source conditions
- Only this row marked “e” in the table: where machinability is the priority, S ≤ 0.030% may be agreed; otherwise the default applies.
- Footnote
- Original-table condition 8
- Source conditions
- Applicability of the three welding carbon-equivalent formulas has not been confirmed individually for each bearing-steel group. Only composition is shown; no carbon equivalent from standard ranges is automatically provided.
Original condition-branch records
Default heat-analysis composition in the original table; Manufacturer option: oxygen in heat analysis ≤0.002%
| Element | Composition requirement |
|---|---|
| C | 0.15 ～ 0.21 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.5 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 1.5 ～ 1.8 |
| Mo | 0.25 ～ 0.35 |
| Ni | 1.4 ～ 1.7 |
| Al | ≤ 0.05 (lower limit not stated) |
| Cu | ≤ 0.3 (lower limit not stated) |
| O | ≤ 0.002 (lower limit not stated) |
- Oxygen-analysis conditions
- Heat analysis
Default heat-analysis composition in the original table; Machinability by agreement: S≤0.030%; Manufacturer option: oxygen in heat analysis ≤0.002%
| Element | Composition requirement |
|---|---|
| C | 0.15 ～ 0.21 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.5 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Cr | 1.5 ～ 1.8 |
| Mo | 0.25 ～ 0.35 |
| Ni | 1.4 ～ 1.7 |
| Al | ≤ 0.05 (lower limit not stated) |
| Cu | ≤ 0.3 (lower limit not stated) |
| O | ≤ 0.002 (lower limit not stated) |
- Oxygen-analysis conditions
- Heat analysis
Default heat-analysis composition in the original table; Manufacturer option: oxygen in product analysis ≤0.002%; not for judging heat-analysis oxygen
| Element | Composition requirement |
|---|---|
| C | 0.15 ～ 0.21 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.5 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 1.5 ～ 1.8 |
| Mo | 0.25 ～ 0.35 |
| Ni | 1.4 ～ 1.7 |
| Al | ≤ 0.05 (lower limit not stated) |
| Cu | ≤ 0.3 (lower limit not stated) |
- Oxygen-analysis conditions
- Product analysis
- Separate product oxygen-analysis requirement
- Element
- O
- Upper limit
- 0.002
- Unit
- wt%
- Analysis type
- Product analysis
Default heat-analysis composition in the original table; Machinability by agreement: S≤0.030%; Manufacturer option: oxygen in product analysis ≤0.002%; not for judging heat-analysis oxygen
| Element | Composition requirement |
|---|---|
| C | 0.15 ～ 0.21 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.5 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Cr | 1.5 ～ 1.8 |
| Mo | 0.25 ～ 0.35 |
| Ni | 1.4 ～ 1.7 |
| Al | ≤ 0.05 (lower limit not stated) |
| Cu | ≤ 0.3 (lower limit not stated) |
- Oxygen-analysis conditions
- Product analysis
- Separate product oxygen-analysis requirement
- Element
- O
- Upper limit
- 0.002
- Unit
- wt%
- Analysis type
- Product analysis
A condition branch must be selected
YesVerification notes
This batch was reconciled against the 2015 DIN German original images and 2014 ISO English original images; edition-specific sources were kept separate, and outdated grades, values and footnote scopes were corrected.18CrNiMo7-6 · 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.3
- PDF page references
- 45
- Unit
- mass fraction (wt%)
- Analysis type
- Heat analysis (informative reference)
Carbon-equivalent reference
Composition from an informative standard annex is for reference only. Normative composition and edition remain unverified; standard-range carbon equivalents and reverse matching are disabled.
Composition
| Element | Composition requirement |
|---|---|
| C | 0.15 ～ 0.21 |
| Si | 0.15 ～ 0.4 |
| Mn | 0.5 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.035 (lower limit not stated) |
| Cr | 1.5 ～ 1.8 |
| Mo | 0.25 ～ 0.35 |
| Ni | 1.4 ～ 1.7 |
| Cu | ≤ 0.4 (lower limit not stated) |
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 reference: EN ISO 683-3 (undated reference; applicable edition 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.