ASTM A182 F11

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

Grade: F11 Class1, Class2 and Class3

Chemical Requirements   max,%

ElementsF11 Class1F11 Class2F11 Class3
Carbon0.05-0.150.10-0.200.10-0.20
Manganese0.30-0.600.30-0.800.30-0.80
Phosphorus0.0300.0400.040
Sulfur0.0300.0400.040
Silicon0.5-1.00.5-1.00.5-1.0
Chromium1.00-1.501.00-1.501.00-1.50
Molybdenum0.44-0.650.44-0.650.44-0.65

 

Tensile and Hardness Requirements

GradeF11 Class1F11 Class2F11 Class3
Tensile Strength,min, ksi [Mpa]60[415]70[485]75[515]
Yield Strength, min,ksi [MPa]30[205]40[275]45[310]
Elongation in 2 in.[50 mm] or 4D,min, %202020
Reduction of Area, min, %453030
Brinell HardnessNumber121-174143-207156-207