ASTM A182 / A182M UNS S30403

ASTM A182 UNS S30403 is a forging material specification for 18% Chromium, 8% Nickel, Low Carbon 304LG 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 S30403 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 %
F304L S30403 18 chromium, 8 nickel,
low carbon 304LG
Carbon 0.030 max
Manganese 2.00 max
Phosphorus 0.045 max
Sulfur 0.030 max
Silicon 1.00 max
Nickel 8.0 - 13.0
Chromium 18.0 - 20.0
Nitrogen 0.10 max

Mechanical Properties

Property Value
Tensile Strength, min, ksi [MPa] 70 [485]
Yield Strength, min, ksi [MPa] 25 [170]
Elongation in 2 in. [50mm] or 4D, min, % 30
Reduction or Area, min, % 50
Brinell Hardness Number, HBW --