Uns S30815 Chemical Composition 253ma Stainless Steel Bar

uns s30815 chemical composition 253ma stainless steel bar1 253MA is an austenitic, chromium-nickel stainless steel with heat resistance and high strength2 Similar material DIN 1.48353 size vary from OD10 to 200mm

uns s30815 chemical composition 253ma stainless steel bar

253MA stainless steel bar is a high temperature austenitic grade steel used in a wide variety of industrial applications. It is also known as UNS S30815 or 1.4835 steel and is mainly composed of chromium, nickel and nitrogen. The chemical composition of the 253MA stainless steel rod is optimized to provide excellent performance in high temperature environments while maintaining its corrosion resistance and durability.

The chemical composition of the 253MA stainless steel rod consists of about 21% chromium, 11% nickel, 0.08% carbon, 1.5-2.5% manganese, 0.15-0.45% silicon, 0.03% sulfur and 0.11-0.22% nitrogen. This composition provides several benefits to the material, including excellent scaling resistance, creep strength and oxidation resistance, even at high temperatures of up to 1150 degree .

The presence of nitrogen in this steel increases its high temperature strength and, combined with the optimized concentration of other alloys, provides excellent mechanical properties and weldability. In addition, the high nickel and chromium content of the 253MA stainless steel bar ensures excellent corrosion resistance, especially in harsh and acidic environments. In addition, the addition of manganese and silicon increases the workability and weldability of steel, making it one of the main raw materials for manufacturing and processing.

2.Heat Resistance

• Excellent resistance to air, at temperatures up to 1150 degree . At high temperatures the steel quickly forms a thin, Oxidation - highly adherent and elastic oxide. This oxide gives good protection even under cyclic conditions.

• Carburisation - Under oxidising conditions this grade can perform well, but alloys with higher nickel content are preferred if the atmosphere is reducing.

• Sulphidation - Good resistance to sulphur- bearing gases in an oxidising atmosphere, even if only traces of oxygen are present. Reducing gases prevent the protective oxide forming. 253MA has high strength at elevated temperatures so is often used for structural and pressure-containing applications at temperatures above about 500 degree and up to about 900 degree . Its strength at these temperatures is higher than that of alternatives such as Grade 310. 253MA will become sensitised in the temperature range of 425-860 degree ; this is not a problem for high temperature applications, but will result in reduced aqueous corrosion resistance.

3.Applications

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