20CRMNTIAH
1 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 20CRMNTIAH →20CrMnTiAH · GB/T 5216-2004
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
- GB/T 5216-2004
- Table / clause
- Tables 1 and 2, notes a–c and clause 6.1; 15CrMoH includes Amendment No. 1
- PDF page references
- 1、6、7
Carbon-equivalent reference
Estimates are presented separately for each applicable composition condition. Match the actual ordering conditions; ranges must not be combined.
Tables 1/2: default heat analysis
Purchaser-specified semi-free-cutting S .020–.035%; prefix S is added before designation H
Hot pressure working Cu≤.20%
For hot-pressure working, Cu≤0.20%; if the purchaser requires semi-free-cutting S at 0.020–0.035%, prefix the designation H with S.
Composition record (conditional branches apply; this is not an unconditional requirement)
| Element | Composition requirement |
|---|---|
| C | 0.17 ～ 0.23 |
| Si | 0.17 ～ 0.37 |
| Mn | 0.8 ～ 1.15 |
| Cr | 1.0 ～ 1.35 |
| Ti | 0.04 ～ 0.1 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Cu | ≤ 0.25 (lower limit not stated) |
| Ni | ≤ 0.3 (lower limit not stated) |
Applicability and limitations
GB/T 5216—2004 original Tables 1/2 and 6.1, ladle-analysis mass fraction wt%; retain the actual 2004 edition.
For high-quality steel, Note a to Table 1 adds A before H (e.g. 40CrAH); P/S by quality level and residual Cu/Cr/Ni follow Table 2; do not mix with the 2014 edition.
Under 6.1.3, Cu≤0.20% for hot-pressure processing. If the purchaser requires S 0.020–0.035%, add S before H; the sulfur tolerance ±0.005 is separately stated and does not expand the default range.
Table 1 alloy-element ranges take precedence over Table 2 residual limits; a blank means unspecified, not zero.
H/HH/HL hardenability bands, delivery condition, hardness and suitability for cold-heading processes require separate verification; this does not automatically create a supply product.
Original condition-branch records
Tables 1/2: default heat analysis
| Element | Composition requirement |
|---|---|
| C | 0.17 ～ 0.23 |
| Si | 0.17 ～ 0.37 |
| Mn | 0.8 ～ 1.15 |
| Cr | 1.0 ～ 1.35 |
| Ti | 0.04 ～ 0.1 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Cu | ≤ 0.25 (lower limit not stated) |
| Ni | ≤ 0.3 (lower limit not stated) |
Purchaser-specified semi-free-cutting S .020–.035%; prefix S is added before designation H
| Element | Composition requirement |
|---|---|
| C | 0.17 ～ 0.23 |
| Si | 0.17 ～ 0.37 |
| Mn | 0.8 ～ 1.15 |
| Cr | 1.0 ～ 1.35 |
| Ti | 0.04 ～ 0.1 |
| P | ≤ 0.025 (lower limit not stated) |
| S | 0.02 ～ 0.035 |
| Cu | ≤ 0.25 (lower limit not stated) |
| Ni | ≤ 0.3 (lower limit not stated) |
Hot pressure working Cu≤.20%
| Element | Composition requirement |
|---|---|
| C | 0.17 ～ 0.23 |
| Si | 0.17 ～ 0.37 |
| Mn | 0.8 ～ 1.15 |
| Cr | 1.0 ～ 1.35 |
| Ti | 0.04 ～ 0.1 |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Cu | ≤ 0.2 (lower limit not stated) |
| Ni | ≤ 0.3 (lower limit not stated) |
For hot-pressure working, Cu≤0.20%; if the purchaser requires semi-free-cutting S at 0.020–0.035%, prefix the designation H with S.
| Element | Composition requirement |
|---|---|
| C | 0.17 ～ 0.23 |
| Si | 0.17 ～ 0.37 |
| Mn | 0.8 ～ 1.15 |
| Cr | 1.0 ～ 1.35 |
| Ti | 0.04 ～ 0.1 |
| P | ≤ 0.025 (lower limit not stated) |
| S | 0.02 ～ 0.035 |
| Cu | ≤ 0.2 (lower limit not stated) |
| Ni | ≤ 0.3 (lower limit not stated) |