General Description

253 MA (S30815/1.4835) is an austenitic, heat resistant stainless steel alloyed with nitrogen and suitable for high temperature applications up to 1150 °C.

253 MA is featured with high creep strength, excellent oxidation resistance and good resistance to carburization in constantly carburizing gas. 253 MA can very well take the place of higher alloyed materials such as 25Cr/20Ni steels and Alloy 800H, or even Alloy 600 in certain cases.

Chemical Composition

Grade Fe% Ni% Cr% Ce% C% Mn% Si% S% P% N%
253 MA Bal. 10.0-12.0 20.0-22.0 0.03-0.08 0.05-0.12 Max 0.8 1.40-2.00 Max 0.03 Max 0.04 0.14-0.20

Designations

UNS S30815

Werkstoff Nr. 1.4835

Specifications

253 MA Bar: ASTM A276, A479

253 MA Strip/Sheet/Plate: ASTM A240, A480, A167

253 MA Pipe/Tube: ASTM A213, A312

Physical Properties

Density:7.8 g/cm3

Melting Point: 1400℃

Mechanical Properties

Solution Annealed

Tensile: Min 650 MPa

Yield Rp0.2: Min 310 MPa

Elongation A5: Min 40%

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