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Forging Materials

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Low Alloy Steel

Viking Iron Works, stocks and forges various grades of Low Alloy steels like F1, F11, F22, F5,F9 and F91. Viking forges seamless rings & sleeves, bars , shafts, blocks, discs, upset head and hub forgings, in any of the alloy material grades listed in our materials list. If you have a requirement for forgings not listed in our material list contact us and we would be glad to have the opportunity to review and quote your forging requirements.

F11 Class 1 F5
F9 F1
F22 F91
F11 Class 2 & 3



F11 Class 1

Grade F11 Class 1,2 & 3 1.25% chromium, 0.5% molybdenum, Low Alloy Steel ASTM-A182 Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings and Valves and Parts for High Temperature Service. This specification covers forged low alloy and stainless steel piping components for use in pressure systems.

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F5

UNS K41545 Grade F5 4 to 6% chromium. ASTM-A182 Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings and Valves and Parts for High Temperature Service. This specification covers forged low alloy and stainless steel piping components for use in pressure systems.

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F9

UNS K90941 Grade F9 9% Chromium. ASTM-A182 Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings and Valves and Parts for High Temperature Service. This specification covers forged low alloy and stainless steel piping components for use in pressure systems.

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F1

UNS K12822 Grade F1 Carbon-Molybdenum. ASTM-A182 Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings and Valves and Parts for High Temperature Service. This specification covers forged low alloy and stainless steel piping components for use in pressure systems.

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F22

UNS K21590 Grade F22 Chromium-Molybdenum . ASTM-A182 Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings and Valves and Parts for High Temperature Service. This specification covers forged low alloy and stainless steel piping components for use in pressure systems.

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F91

UNS K90901 Grade F91 9%Chromium, 1% Molybdenum, 0.20% Vanadium plus Columbium and Nitrogen. ASTM-A182 Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings and Valves and Parts for High Temperature Service. This specification covers forged low alloy and stainless steel piping components for use in pressure systems.

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F11 Class 2 & 3

Grade F11 Class 2 & 3 1.25% chromium, 0.5% molybdenum, Low Alloy Steel ASTM-A182 Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings and Valves and Parts for High Temperature Service. This specification covers forged low alloy and stainless steel piping components for use in pressure systems.

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