S20430
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 S20430 →S20430 · ASTM A313/A313M-2003
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Stainless steel
- Subcategory
- Stainless steel
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- ASTM A313/A313M-2003
- Table / clause
- Table 1, footnotes A–B; clauses 1.1, 5, 6
- PDF page references
- 1、2
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.15 (lower limit not stated) |
| Mn | 6.5 ～ 9 |
| P | ≤ 0.06 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
| Cr | 15.5 ～ 17.5 |
| Ni | 1.5 ～ 3.5 |
| N | 0.05 ～ 0.25 |
| Cu | 2 ～ 4 |
Applicability and limitations
Edition 2003, round stainless spring wire, mass fraction wt%. Footnote B to Table 1: values without ranges are maxima; blanks mean unspecified and are not replaced with zero. Table 1UNS, S20430. Mechanical properties for categories such as A/B, or for cold-drawing and subsequent ageing conditions, cannot be inferred from the composition table. This edition does not list 2205; similar grades are not used to fill the gap. The original 2018 and 2025 reaffirmed editions have not been verified. Spring-wire use does not automatically establish cold-heading suitability; no supply product is added automatically.