ASTM A182 / A182M F91

ASTM A182 F91 is a forging material specification for 91 grade stainless 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 grade F91 specification.

ASTM A182 specification covers requirements such as chemical composition, mechanical properties, heat treatment and other supplementary requirements for 91 stainless steel forgings and forged products.

Chemical Composition

Grade Symbol UNS Number Alloy Elements Composition %
F91 K90901 9% chromium, 1% molybdenum, 0.2% vanadium plus columbium and nitrogen Carbon 0.08 - 0.12
Manganese 0.30 - 0.60
Phosphorus 0.020 max
Sulfur 0.010 max
Silicon 0.20 - 0.50
Nickel 0.40 max
Chromium 8.0 - 9.5
Molybdenum 0.85 - 1.05
Columbium 0.06 - 0.10
Nitrogen 0.03 - 0.07
Aluminium 0.02 max
Vanadium 0.18 - 0.25
Titanium 0.01 max
Zirconium 0.01 max

Mechanical Properties

Property Value
Tensile Strength, min, ksi [MPa] 90 [620]
Yield Strength, min, ksi [MPa] 60 [415]
Elongation in 2 in. [50mm] or 4D, min, % 20
Reduction or Area, min, % 40
Brinell Hardness Number, HBW 190-248

Products