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Forging Materials

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4140

(UNS G41400) Medium carbon alloy steel with high hardenability, good fatigue strength and impact resistance.

Chemistry

Element C Mn Si Cr Mo
4140 0.40% 1.00% 0.25% 1.00% 0.20%

Physical Constants

Density0.284 lbs./in3
Density7.83 g/cm3

Heating

Annealing1500ºF slow cool / furnace cool
Tempering200ºF-1200ºF depending on desired hardness
Austenize1500ºF-1600ºF oil quench

Viking Forging Parameters

Rings24" O.D. X 6" long500 lbs.
Sleeves16" O.D. X 12" long500 lbs.
Disks26" Dia. X 6.5" long500 lbs.
Round Bar12" Dia. X 96" long2600 lbs.
Square/Rectangular Bar12" square X 96" long2600 lbs.
Blocks14" X 14" X 14"750 lbs.
Shafts12" Dia. max X 96" long2600 lbs.

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