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Forging Materials

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403

(UNS 40300) A martensitic chromium stainless steel. Is corrosion and heat resistant. Is hardenable by heat treating. Heat material to 1650-1800ºF then oil quench, air or fan cool depending on size.

Chemistry

Element C Mn P S Si Cr Ni
403 0.15% max 1.00% max 0.04% max 0.03% max 0.50% max 11.50-13.00% 0.60% max

Physical Constants

Density0.276 lbs/in3
Density7.64 g/cm3

Heating

Forging2000-2100ºF Finish above 1400ºF
Annealing1500-1650ºF slow cool 1100ºF
Tempering400-1400ºF avoid 800-1100ºF range

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 max. X 96" long2600 lbs.
Blocks14" X 14" X 14"750 lbs.
Shafts12" Dia. max. X 96" long2600 lbs.

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