ASTM A182 F12

ASTM A182 – Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

Grade: F12 Class1 and Class2 

Chemical Requirements   max,%

ElementsF12 Class1F12 Class2
Carbon0.05-0.150.10-0.20
Manganese0.30-0.600.30-0.60
Phosphorus0.0450.040
Sulfur0.0450.040
Silicon0.500.10-0.60
Chromium0.80-1.250.80-1.25
Molybdenum0.44-0.650.44-0.65

 

Tensile and Hardness Requirements

Grade SymbolF12 Class1F12 Class2
Tensile Strength,min, ksi [Mpa]60[415]70[485]
Yield Strength, min,ksi [MPa]32[220]40[275]
Elongation in 2 in.[50 mm] or 4D,min, %2020
Reduction of Area, min, %4530
Brinell HardnessNumber121-174143-207