43CRMO4
6 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 43CRMO4 →43CrMo4 · 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
- 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 | 0.4 ～ 0.46 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.6 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| Mo | 0.15 ～ 0.3 |
| 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 | 0.4 ～ 0.46 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.6 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| Mo | 0.15 ～ 0.3 |
| 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 | 0.4 ～ 0.46 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.6 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| Mo | 0.15 ～ 0.3 |
| 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 | 0.4 ～ 0.46 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.6 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| Mo | 0.15 ～ 0.3 |
| 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 | 0.4 ～ 0.46 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.6 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| Mo | 0.15 ～ 0.3 |
| 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.43CrMo4 · 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
- 15、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 | 0.4 ～ 0.46 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.6 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| Mo | 0.15 ～ 0.3 |
| 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 | 0.4 ～ 0.46 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.6 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| Mo | 0.15 ～ 0.3 |
| 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 | 0.4 ～ 0.46 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.6 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| Mo | 0.15 ～ 0.3 |
| 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 | 0.4 ～ 0.46 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.6 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| Mo | 0.15 ～ 0.3 |
| 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 | 0.4 ～ 0.46 |
| Si | ≤ 0.4 (lower limit not stated) |
| Mn | 0.6 ～ 0.9 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| Mo | 0.15 ～ 0.3 |
| 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.43CrMo4 · ASTM A866-2014
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Alloy steel
- Subcategory
- Bearing steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
IIW / CEV: composition source not verified; standard-range carbon equivalent is not calculated
Pcm (Ito–Bessyo): composition source not verified; standard-range carbon equivalent is not calculated
CET: composition source not verified; standard-range carbon equivalent is not calculated
Composition
| Element | Composition requirement |
|---|---|
| Al | ≤ 0.05 (lower limit not stated) |
| C | 0.4 ～ 0.46 |
| Cr | 0.9 ～ 1.2 |
| Cu | ≤ 0.3 (lower limit not stated) |
| Mn | 0.6 ～ 0.9 |
| Mo | 0.15 ～ 0.3 |
| O | ≤ 0.002 (lower limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Si | ≤ 0.4 (lower limit not stated) |
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.
43CrMo4 · ASTM A866-2018
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Alloy steel
- Subcategory
- Bearing steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
IIW / CEV: composition source not verified; standard-range carbon equivalent is not calculated
Pcm (Ito–Bessyo): composition source not verified; standard-range carbon equivalent is not calculated
CET: composition source not verified; standard-range carbon equivalent is not calculated
Composition
| Element | Composition requirement |
|---|---|
| Al | ≤ 0.05 (lower limit not stated) |
| C | 0.4 ～ 0.46 |
| Cr | 0.9 ～ 1.2 |
| Cu | ≤ 0.3 (lower limit not stated) |
| Mn | 0.6 ～ 0.9 |
| Mo | 0.15 ～ 0.3 |
| O | ≤ 0.002 (lower limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Si | ≤ 0.4 (lower limit not stated) |
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.
43CrMo4 · DIN 17230-1980
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
IIW / CEV: composition source not verified; standard-range carbon equivalent is not calculated
Pcm (Ito–Bessyo): composition source not verified; standard-range carbon equivalent is not calculated
CET: composition source not verified; standard-range carbon equivalent is not calculated
Composition
| Element | Composition requirement |
|---|---|
| C | 0.4 ～ 0.46 |
| Cr | 0.9 ～ 1.2 |
| Cu | ≤ 0.3 (lower limit not stated) |
| Mn | 0.6 ～ 0.9 |
| Mo | 0.15 ～ 0.3 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.035 (lower limit not stated) |
| Si | ≤ 0.4 (lower limit not stated) |
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.
43CrMo4 · NF A 35-565
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Alloy steel
- Subcategory
- Bearing steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
IIW / CEV: composition source not verified; standard-range carbon equivalent is not calculated
Pcm (Ito–Bessyo): composition source not verified; standard-range carbon equivalent is not calculated
CET: composition source not verified; standard-range carbon equivalent is not calculated
Composition
| Element | Composition requirement |
|---|---|
| C | 0.4 ～ 0.46 |
| Cr | 0.9 ～ 1.2 |
| Cu | ≤ 0.3 (lower limit not stated) |
| Mn | 0.6 ～ 0.9 |
| Mo | 0.15 ～ 0.3 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.035 (lower limit not stated) |
| Si | ≤ 0.4 (lower limit not stated) |
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.