20NICRMO7
5 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 20NICRMO7 →20NiCrMo7 · ISO 4954
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material form
- Cold-heading wire
- Original record status
- Reference transcription of standard
- Standard edition
- ISO 4954:2018
- Table / clause
- Table B.2
Carbon-equivalent reference
IIW / CEV：0.4533–0.6867Known-element contribution; incomplete value; missing V 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）：0.2475–0.3733Known-element contribution; incomplete value; missing 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：0.2875–0.4250 Independent-element envelope of standard ranges; not measured heat-analysis values 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 | 0.17 ～ 0.23 |
| Si | ≤ 0.3 (lower limit not stated) |
| Mn | 0.4 ～ 0.7 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Cr | 0.35 ～ 0.65 |
| Ni | 1.6 ～ 2.0 |
| Mo | 0.2 ～ 0.3 |
| Cu | ≤ 0.25 (lower limit not stated) |
Applicability and limitations
ISO 4954:2018; heat analysis, mass fraction %; values without a stated range are upper limits; see the source page for complete table footnotes. The website does not specify the edition; the source edition is shown here and does not establish contractual applicability.
Verification notes
Standard source: ISO 4954:2018 · Table B.2View associated products →20NiCrMo7 · ISO 4954-2018
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Alloy steel
- Subcategory
- Case-hardening steel
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- ISO 4954:2018
- Table / clause
- Table B.2
Carbon-equivalent reference
IIW / CEV：0.4533–0.6867Known-element contribution; incomplete value; missing V 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）：0.2475–0.3733Known-element contribution; incomplete value; missing 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：0.2875–0.4250 Independent-element envelope of standard ranges; not measured heat-analysis values 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 | 0.17 ～ 0.23 |
| Si | ≤ 0.3 (lower limit not stated) |
| Mn | 0.4 ～ 0.7 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Cr | 0.35 ～ 0.65 |
| Ni | 1.6 ～ 2.0 |
| Mo | 0.2 ～ 0.3 |
| Cu | ≤ 0.25 (lower limit not stated) |
Applicability and limitations
ISO 4954:2018, Table B.2 gives heat analysis; A single value is a maximum; a dash is not zero. ; Product-analysis tolerances are listed separately under Table 2/3 of the standard and do not directly widen the heat-analysis composition ranges. ; Optional Al0.020–0.050% to improve cold-heading performance; this is not a universal mandatory minimum. ; Low Si may be agreed in the order, taking hardenability into account; Where hardenability is required, the standard permits limited deviations, except for P/S; C must not exceed 0.01%; see Table 2 for the other requirements.
Verification notes
Original standard Table B.2 and footnotes verified20NiCrMo7 · 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 | 0.17 ～ 0.23 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.4 ～ 0.7 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 0.35 ～ 0.65 |
| Mo | 0.2 ～ 0.3 |
| Ni | 1.6 ～ 2.0 |
| 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 | 0.17 ～ 0.23 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.4 ～ 0.7 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 0.35 ～ 0.65 |
| Mo | 0.2 ～ 0.3 |
| Ni | 1.6 ～ 2.0 |
| 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 | 0.17 ～ 0.23 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.4 ～ 0.7 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Cr | 0.35 ～ 0.65 |
| Mo | 0.2 ～ 0.3 |
| Ni | 1.6 ～ 2.0 |
| 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 | 0.17 ～ 0.23 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.4 ～ 0.7 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 0.35 ～ 0.65 |
| Mo | 0.2 ～ 0.3 |
| Ni | 1.6 ～ 2.0 |
| 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 | 0.17 ～ 0.23 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.4 ～ 0.7 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Cr | 0.35 ～ 0.65 |
| Mo | 0.2 ～ 0.3 |
| Ni | 1.6 ～ 2.0 |
| 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.20NiCrMo7 · Ovako Product Catalogue CO-117 ENG 24:07 (2024)
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
- Bars, tubes, rings and precomponents
- Composition basis
- Manufacturer typical/nominal values, not guaranteed ranges
- Original record status
- Manufacturer source verified
- Document edition
- CO-117 ENG 24:07 ©Ovako 2024
- Document title
- Ovako Product Catalogue
- PDF page references
- 43
- Unit
- Interpreted as mass fraction (%) using other documents from the same manufacturer; the unit is not explicitly stated in this table
- Analysis type
- Typical composition analysis
- Manufacturer
- Ovako
Carbon-equivalent reference
Manufacturer typical single values are composition references only; no range estimate is made. They are neither standard guarantees nor measured heat results; Formula applicability requires review against the intended use and process.
IIW / CEV: manufacturer typical/nominal single values are shown for reference only; standard-range carbon equivalent is not calculated
Pcm (Ito–Bessyo): manufacturer typical/nominal single values are shown for reference only; standard-range carbon equivalent is not calculated
CET: manufacturer typical/nominal single values are shown for reference only; standard-range carbon equivalent is not calculated
Composition
| Element | Composition requirement |
|---|---|
| C | Typical/nominal value 0.2 (not a guaranteed range) |
| Si | Typical/nominal value 0.2 (not a guaranteed range) |
| Mn | Typical/nominal value 0.6 (not a guaranteed range) |
| Cr | Typical/nominal value 0.5 (not a guaranteed range) |
| Mo | Typical/nominal value 0.2 (not a guaranteed range) |
| Ni | Typical/nominal value 1.7 (not a guaranteed range) |
Applicability and limitations
Ovako 2024 product catalogue, PDF page 43; manufacturer’s typical analysis, for composition reference only. The original header does not explicitly state units; interpreted using the manufacturer’s mass-fraction % information. Neither standard guaranteed values nor measured heat analysis. Excluded from limit-based reverse search and carbon-equivalent calculation; blanks and element names alone in the other-elements field are not filled with 0. Manufacturer code: 157.
Conditional requirement
- Footnote
- Units
- Source conditions
- The original table header does not state units explicitly; interpreted as mass fraction % using the manufacturer’s official chemistry information. This table does not itself print wt%.
- Footnote
- Typical analysis
- Source conditions
- All values are manufacturer’s typical single values, not limits or measured heat analysis; not used for limit-based reverse search or standard-range carbon equivalent.
- Footnote
- Grade designation
- Source conditions
- An asterisk after the original grade indicates a non-official EN standard designation, named only according to EN10027. This does not complete verification of the cited standard originals or editions.
Verification notes
All 170 rows of the 2021 original table were visually checked. Values in corresponding 2024 cells are unchanged; recognition differences were reviewed separately. Rows with conflicting values under the same code are excluded; values are not mixed across sections.Source notes
For medium-sized bearing and transmission components20NiCrMo7 · 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 | 0.17 ～ 0.23 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.4 ～ 0.7 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 0.35 ～ 0.65 |
| Mo | 0.2 ～ 0.3 |
| Ni | 1.6 ～ 2.0 |
| 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 | 0.17 ～ 0.23 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.4 ～ 0.7 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 0.35 ～ 0.65 |
| Mo | 0.2 ～ 0.3 |
| Ni | 1.6 ～ 2.0 |
| 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 | 0.17 ～ 0.23 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.4 ～ 0.7 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Cr | 0.35 ～ 0.65 |
| Mo | 0.2 ～ 0.3 |
| Ni | 1.6 ～ 2.0 |
| 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 | 0.17 ～ 0.23 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.4 ～ 0.7 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 0.35 ～ 0.65 |
| Mo | 0.2 ～ 0.3 |
| Ni | 1.6 ～ 2.0 |
| 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 | 0.17 ～ 0.23 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.4 ～ 0.7 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Cr | 0.35 ～ 0.65 |
| Mo | 0.2 ～ 0.3 |
| Ni | 1.6 ～ 2.0 |
| 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