253MA/S30815 Stainless Steel
253MA is a heat-resistant austenitic stainless steel, designed for applications requiring high creep strength and excellent corrosion resistance. It exhibits high-temperature properties similar to those of high-alloyed steels and nickel-based alloys in many cases. Due to its balanced chemical composition, this steel boasts excellent comprehensive properties within the temperature range of 850℃-1100℃, with high oxidation resistance and an oxidation scale temperature up to 1150℃; it also possesses high creep resistance and creep-rupture strength. It has good resistance to high-temperature corrosion and abrasive corrosion in most gas mediums, along with high yield and tensile strengths at elevated temperatures. Additionally, it offers good formability, weldability, and sufficient machinability.
Section 1: Chemical Composition of 253MA:
Carbon C: 0.05~0.10
Sulfur (S): ≤0.030
Silicon (Si): 1.40~2.00
Chromium (Cr): 20.00~22.00
Nickel (Ni): $10.00 ~ $12.00
Nitrogen (N): 0.14~0.20
Cerium (Ce): 0.03~0.08.
Section II: Features of 253MA
1. Outperforms 310S and 1Cr20Ni14Si2 with reduced nickel content and lower cost.
At 900°C, it exhibits high strength. In air, under non-pressure conditions, it can be used up to 1150°C, with superior resistance to high-temperature oxidation.
3. The short-term tensile strength at various temperatures is typically 20% higher than that of standard stainless steels (such as 304, 310S).
4. Features long-term high-temperature performance (creep resistance, endurance).
Three, 253MA Equivalent Grades: German Standard: 1.4835, X9CRNISINCE21-11-2; American Standard: S30815, F45, 253MA.
253MA Application Range: Widely used in sintering equipment, blast furnace equipment, steel melting, furnaces, continuous casting machines (heating furnaces), heat treatment furnaces and accessories, mineral equipment, and cement production equipment. 253MA steel can be used in pressure-bearing applications up to 900°C and non-pressure high-temperature components with working temperatures up to 1150°C.
