ASTM A182 / A182M UNS S31050

ASTM A182 UNS S31050 is a forging material specification for 25% Chromium, 20% Nickel 310HG alloy steel and is used for manufacturing bare forgings or forged and machined products for applications involving high temperature service. Ferrobend offers forged flanges, fittings, valves bodies, fasteners, plates, bars, rings and similar pressure parts in ASTM A182 UNS S31050 specification.

ASTM A182 specification covers requirements such as chemical composition, mechanical properties, heat treatment and other supplementary requirements for 1 stainless steel forgings and forged products.

Chemical Composition

Grade Symbol UNS Number Alloy Elements Composition %
F310MoLN S31050 25 chromium, 22 nickel,
modified with molybdenum and nitrogen,
low carbon 310MoLNG 		Carbon 0.030 max
Manganese 2.00 max
Phosphorus 0.030 max
Sulfur 0.015 max
Silicon 0.40 max
Nickel 21.0 - 23.0
Chromium 24.0 - 26.0
Molybdenum 2.00 - 3.00
Nitrogen 0.10 - 0.16

Mechanical Properties

Property Value
Tensile Strength, min, ksi [MPa] 78 [540]
Yield Strength, min, ksi [MPa] 37 [255]
Elongation in 2 in. [50mm] or 4D, min, % 25
Reduction or Area, min, % 40

Products