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Forging Materials

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(UNS G41300) Medium carbon, chromium-molybdenum steel. Has good hardenability, strength, wear resistance, and ductility.


Element C Mn P S Si Cr Mo
4130 0.28-0.33% 0.40-0.60% 0.035% max 0.040% max 0.15-0.30% 0.80-1.1% 0.18-0.25%

Physical Constants

Density0.284 lbs./in^3
Density7.84 g/cm^3


Annealing1550ºF furnace cool to 900ºF then air cool
Austenize1600ºF then 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" O.D. X 96" long2600 lbs.
Square/Rectangular Bar12" square X 96" long2600 lbs
Blocks14" X 14" X14"750 lbs.
Shafts12" Dia. X 96" long2600 lbs.

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