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Forging Materials

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(UNS S43020) A ferritic stainless steel. Is not harden by heat treatment and is magnetic in all conditions. Has good physical and mechanical characteristics.


Element C Mn P S Si Cr Mo
430F 0.12% max. 1.25% max. 0.06% max. 0.015% min. 1.00% max 16.00-18.00% 0.06% max.

Physical Constants

Density0.278 lbs/in3
Density7.70 g/cm3


Forgingpreheat 1500-1600ºF, forge 1900-2100ºF
Annealingheat to 1250-1400ºF then air cool

Viking Forging Parameters

Rings24" O.D. X 8" long500 lbs.
Sleeves24" O.D. max500 lbs.
Disks24" Dia. X 4" Long500 lbs.
Round Bar9.5" Dia. X 96" long2000 lbs.
Square/Rectangular Bar9.5" Square max. X 96" long2000 lbs.
Blocks11.5" X 11.5" X 11.5"500 lbs.
Shafts9.5" Dia. max. X 96" long2000 lbs.

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