ASTM A182 / A182M UNS S31609

ASTM A182 UNS S31609 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 S31609 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 %
F316H S31609 18 chromium, 8 nickel,
modified with molybdenum 316HG
Carbon 0.04 - 0.10
Manganese 2.00 max
Phosphorus 0.045 max
Sulfur 0.030 max
Silicon 1.00 max
Nickel 10.0 - 14.0
Chromium 16.0 - 18.0
Molybdenum 2.00 - 3.00

Mechanical Properties

Property Value
Tensile Strength, min, ksi [MPa] 75 [515]
Yield Strength, min, ksi [MPa] 30 [205]
Elongation in 2 in. [50mm] or 4D, min, % 30
Reduction or Area, min, % 50