1. Characteristics of Stainless Steel 253MA:
253MA is a heat-resistant austenitic stainless steel, designed for applications that require high creep strength and good corrosion resistance. Its use temperature range is 850~1100 ℃.
2. Uses of Stainless Steel 253MA:
In addition to the alloying elements chromium and nickel, this grade of stainless steel also contains a small number of rare earth metals (Rare Earth Metals, REM), which significantly improves its oxidation resistance. Nitrogen is added to improve creep properties and make this steel completely austenitic. Although the chromium and nickel content is relatively low, this stainless steel has the same high-temperature characteristics as highly alloyed alloy steels and nickel-based alloys in many cases.
253MA heat-resistant stainless steel is based on Cr21-Ni11, through the appropriate addition of rare earth elements and 1400-2000ppm N to improve the high-temperature performance of steel. Compared with the common 310S (0Cr25Ni20), the precious metal Ni Under the premise that the content is greatly reduced, the performance can be improved, and the market prospect is broad.
253MA (S30815) section nickel heat-resistant austenitic stainless steel
Product name: 253MA (S30815) section nickel heat-resistant austenitic stainless steel
Product origin: Outokumpu, Sweden
Main components: C≤0.09 N ≤0.17 Cr ≤21 Ni ≤11 Mo≤ 4.1
3. Product Description:
253MA is a nickel-saving heat-resistant austenitic stainless steel designed for applications requiring high creep strength and good corrosion resistance. Its use temperature range is 850~1100℃.
- Compared with 310S and 1Cr20Ni14Si2, it has superior performance, saves Ni, and is cheaper.
- High strength at 900¡æ. In the air, it can be used up to 1150℃. under non-pressure conditions, and has excellent high-temperature oxidation resistance.
- The short-term tensile strength at each temperature is more than 20% higher than the strength of ordinary stainless steel (such as 304 and 310S).
- With high-temperature long-term performance (creep performance, durability).
4. Application fields:
- It can be used in metallurgy, petrochemical, energy, and power fields.
- It is widely used in the manufacture of the central cylinder of the cyclone separator of the environmentally friendly circulating fluidized bed boiler.
Executive standard: DIN/EN 1.4835, ASTM S30815, UNS S30815, 253MA