ASTM A182 / A182M UNS S34751

ASTM A182 UNS S34751 is a forging material specification for 20% Nickel, 8% 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 S34751 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

Identification Symbol UNS Number Alloy Elements Composition %
F347 LN S34751 18 chromium, 8 nickel
modified with
columbium and
nitrogen
347LN 		Carbon 0.005 - 0.020
Manganese 2.00 max
Phosphorus 0.045 max
Sulfur 0.030 max
Silicon 1.00 max
Nickel 9.00 - 13.00
Chromium 17.00 - 19.00
Columbiun 0.20 - 0.50
Nitrogen 0.06 - 0.10

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
Brinell Hardness Number, HBW --

Products