Duplex S31803 · ISO 15510
Duplex S31803 is presented here as X2CrNiMoN22-5-3 (4462-318-03-I) under ISO 15510. Chemical composition and designations for stainless steels; a companion reference to product specifications.
X2CrNiMoN22-5-3
Designation: 4462-318-03-I
Data edition: ISO 15510:2014
Duplex S31803 4462-318-03-I
Duplex S31803 is presented here as X2CrNiMoN22-5-3 (4462-318-03-I) under ISO 15510. Chemical composition and designations for stainless steels; a companion reference to product specifications.
ISO 15510 defines chemistry, not plate, sheet or strip mechanical acceptance values. The SS309 and SS310 links identify the ISO compositions shown, rather than claiming all 309/309S or 310/310S variants are identical.
Related grades
18 material references with ISO 15510 data.
Duplex S31803 properties
Select a table to compare requirements.
| Element | Mass % |
|---|---|
| C | ≤0.030 |
| Si | ≤1.00 |
| Mn | ≤2.00 |
| P | ≤0.035 |
| S | ≤0.015 |
| Cr | 21.0–23.0 |
| Ni | 4.5–6.5 |
| Mo | 2.5–3.5 |
| N | 0.10–0.22 |
| Other elements | — |
Composition in mass %. ≤ denotes a maximum; ≥ denotes a minimum; paired values are ranges. — means no numerical limit is provided in the cited data, not zero.
| Form | Thickness (mm) | Condition | Test direction | Rp0.2 (MPa) | Rp1.0 min (MPa) | Rm (MPa) | A80 min (%) | A min (%) | Other requirements |
|---|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | — | — | — | — | — |
—: ISO 15510 does not prescribe mechanical-property acceptance limits. Use the applicable flat-product standard for strength, elongation, thickness and delivery-condition requirements.
Specification source
Technical data above is identified by its source edition: ISO 15510:2014.