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Forging Materials

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420

(UNS S42000) Martensitic hardenable 12% chrome stainless steel with greater strength and hardness and better wear resistance than 410 stainless.

Chemistry

Element C Mn P S Si Cr Ni
420 0.15% 1.00% max 0.040% max 0.030% max 1.00% max 12.0-14.0% 0.75% max

Physical Constants

Density0.279 lb/in3
Density7.69 g/cm3

Heating

Forging2000ºF-2200ºF
Annealing1550ºF-1650ºF slow cool / furnace cool
Tempering300ºF-400ºF 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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