353MA vs 310S
These two grades are listed as equivalents of each other: their chemistry windows overlap and they serve the same applications. They are not always identical — check the differences below before substituting, especially in certified designs.
353MA
Stainless Steel
353MA is a silicon-, nitrogen- and cerium-alloyed heat-resistant austenitic stainless (a proprietary Alleima grade under UNS S35315) built on a 25Cr-21Ni base. It targets carburizing and oxidizing furnace atmospheres at 950–1150 °C, upgrading 310S parts that fail by scaling, creep or carburization.
Standards: DIN 1.4854 · AISI UNS S35315 (353MA)
310S
Stainless Steel
310S is the low-carbon version of 310 and the most common heat-resistant sheet and plate grade for welded furnace fabrications. It keeps the oxidation resistance of 310 with better weld-zone behaviour.
Standards: DIN 1.4845 · AISI 310S · JIS SUS310S · GB 06Cr25Ni20
Chemical composition compared (%)
| Element | 353MA | 310S |
|---|---|---|
| C | 0.04–0.10 | ≤0.08 |
| Si | 1.20–2.00 | ≤1.50 |
| Mn | ≤0.80 | ≤2.00 |
| P | ≤0.040 | ≤0.045 |
| S | ≤0.030 | ≤0.030 |
| Cr | 24.00–26.00 | 24.00–26.00 |
| Ni | 20.00–22.00 | 19.00–22.00 |
| N | 0.12–0.20 | — |
| Ce | 0.03–0.08 | — |
Properties compared
| Property | 353MA | 310S |
|---|---|---|
| Delivery condition | Solution annealed | Annealed |
| Tensile strength | ≥550 MPa | 515–690 MPa |
| Density | 7.90 g/cm³ | 7.90 g/cm³ |
| Max scaling temperature | ~1150 °C | ~1035 °C continuous |
| Hardness | — | ≤217 HB (annealed) |
Sourcing either grade?
Nasteel stocks both families from Shenzhen with EN 10204 3.1 mill certificates by heat number.
Ask for a quotationSee full data sheets: 353MA · 310S. Substitution decisions for certified parts stay with the design authority.