353MA vs 253MA
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)
253MA
Stainless Steel
253MA is a nitrogen-alloyed, cerium-bearing heat-resistant austenitic stainless (a proprietary Outokumpu grade under UNS S30815). Its silicon and rare-earth additions give oxidation resistance to about 1150 °C with creep strength well above 310S.
Standards: DIN 1.4835 · AISI UNS S30815 (253MA)
Chemical composition compared (%)
| Element | 353MA | 253MA |
|---|---|---|
| C | 0.04–0.10 | 0.05–0.10 |
| Si | 1.20–2.00 | 1.40–2.00 |
| Mn | ≤0.80 | ≤0.80 |
| P | ≤0.040 | ≤0.040 |
| S | ≤0.030 | ≤0.030 |
| Cr | 24.00–26.00 | 20.00–22.00 |
| Ni | 20.00–22.00 | 10.00–12.00 |
| N | 0.12–0.20 | 0.14–0.20 |
| Ce | 0.03–0.08 | 0.03–0.08 |
Properties compared
| Property | 353MA | 253MA |
|---|---|---|
| Delivery condition | Solution annealed | Solution annealed |
| Tensile strength | ≥550 MPa | 650–850 MPa |
| Density | 7.90 g/cm³ | 7.80 g/cm³ |
| Max scaling temperature | ~1150 °C | ~1150 °C |
| 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 · 253MA. Substitution decisions for certified parts stay with the design authority.