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253MA stainless steel, also known as UNS S30815 and W.Nr. 1.4835, is an austenitic heat-resistant alloy designed for excellent oxidation resistance and high strength at elevated temperatures. With its high chromium, nitrogen, and rare earth content, 253MA performs exceptionally well in environments up to 1100°C (2012°F).
253MA is widely used in heat treatment furnaces, kilns, burner components, and petrochemical equipment. Its outstanding thermal stability and resistance to scaling and creep make it a preferred choice in industries like metallurgy, power generation, and industrial heating.
| C | Mn | Si | P | S | Cr | Ni | N | Ce | |
| min. | 0.05 | – | 1.1 | – | – | 20 | 10 | 0.14 | 0.03 |
| max. | 0.1 | 0.8 | 2 | 0.04 | 0.03 | 22 | 12 | 0.2 | 0.08 |
| Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (mm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat | Electrical Resistivity (nW.m) | |||
| 0-100°C | 0-600°C | 0-1000°C | at 20°C | at 1000°C | 0-100°C (J/kg.K) | |||
| 7800 | 200 | 17 | 18.5 | 19.5 | 15 | 29 | 500 | 850 |
| Tensile Str (MPa) min | Yield Str 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | |||
| 600 | 310 | 40 | 95 | 217 |
| UNS No | Old British | Euronorm | Swedish | Japanese | ||
| BS | En | No | Name | SS | JIS | |
| S30815 | – | – | 1.4835 | X9CrNiSiNCe21-11-2 | 2368 | – |
Standard product forms of 253MA/S30815/1.4835 are pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire. The products are available in a wide variety of sizes. Please contact us at [email protected] for full information.
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