ASTM A182 / A182M UNS K42544

ASTM A182 UNS K42544 is a forging material specification for 4 to 6% Chromium 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 K42544 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 %
F5A K42544 4 to 6 % chromium Carbon 0.25 max
Manganese 0.60 max
Phosphorus 0.040 max
Sulfur 0.030 max
Silicon 0.50 max
Nickel 0.50
Chromium 4.0 - 6.0
Molybdenum 0.44 - 0.65

Mechanical Properties

Property Value
Tensile Strength, min, ksi [MPa] 90 [620]
Yield Strength, min, ksi [MPa] 65 [450]
Elongation in 2 in. [50mm] or 4D, min, % 22
Reduction or Area, min, % 50
Brinell Hardness Number, HBW 187-248