ML20MNAL
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 ML20MNAL →ML20MnAl · GB/T 28906-2012
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Subcategory
- Surface-hardening type cold-heading steel
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- GB/T 28906-2012
- Table / clause
- Table 2; 6.1.3/6.1.5–6.1.7
- PDF page references
- 5、7
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.18 ～ 0.23 |
| Si | ≤ 0.1 (lower limit not stated) |
| Mn | 0.7 ～ 1 |
| Al | ≥ 0.02 (upper limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.025 (lower limit not stated) |
| Ni | ≤ 0.2 (lower limit not stated) |
| Cu | ≤ 0.2 (lower limit not stated) |
| Cr | ≤ 0.2 (lower limit not stated) |
Applicability and limitations
GB/T28906-2012, Table 2, heat analysis, mass percent. ; Alt in the table is total aluminum, with requirement ≥0.020% but no maximum; the 2025 maximum or acid-soluble-aluminum replacement conditions are not applied. ; 6.1.5 residual Cr/Ni/Cu are each ≤0.20%; Where Cr is a tabulated alloy range, the residual Cr maximum does not apply; Where Sn is unspecified in the original text, the Sn maximum from a newer edition is not inserted. ; 6.1.7 composition tolerances follow GB/T222; Heat-analysis limits are not treated as product-analysis tolerances. ; The standard scope covers hot-rolled cold-heading wire rod; supply conditions and the actual component process still require confirmation.