52SICRMNNI
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 52SICRMNNI →52SiCrMnNi · GB/T 1222-2016
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 1222-2016
- Table / clause
- Table 1 · continued table · Notes a/b; 6.1.1–6.1.3
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.49 ～ 0.56 |
| Si | 1.2 ～ 1.5 |
| Mn | 0.7 ～ 1.0 |
| Cr | 0.7 ～ 1.0 |
| Ni | 0.5 ～ 0.7 |
| Cu | ≤ 0.25 (lower limit not stated) |
| P | ≤ 0.025 (lower limit not stated) |
| S | ≤ 0.02 (lower limit not stated) |
| O | ≤ 0.0025 (lower limit not stated) |
Applicability and limitations
Heat analysis, mass fractions wt%; Product-analysis tolerances are assessed separately under GB/T222 and are not included in this table. ; Table 1, note b: when required by the purchaser and stated in the contract, residual Cu may be ≤0.20%; Default tabulated limit ≤0.25%. ; 6.1.2: oxygen in 40SiMnVBE is ≤0.0015%; oxygen in other alloy spring steels is ≤0.0025%; This limit is not extended to carbon spring steels. ; Unspecified elements do not mean zero; Spring-steel composition does not establish suitability for every cold-headed component; the specific process requires a separate assessment.