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Forging Materials

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(UNS S41000) A martensitic stainless steel, with good strength, corrosion resistance and ductility. Resistant to scaling up to 1200ºF. Is hardenable through heat treatment. Heat to 1750-1850ºF soak at heat then quench in oil or air.


Element C Mn P S Si Cr
410 0.15% max 1.00% max 0.040% max 0.030% max 1.00% max 11.50-13.50%

Physical Constants

Density0.280 lbs./in3
Density7.75 g/cm3


Forging2000ºF-2200ºF 1650ºF minimum
Annealing1200ºF-1400ºF then air cool
Tempering750ºF-1050ºF at least 1 hour then air cool

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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