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(UNS S45500) Martensitic age-hardenable stainless steel. Has high strength and good corrosion resistance. Custom 455® is a registered trademark of Carpenter Technology Corporation.


Element C Mn P S Si Cr Ni Cu Mo Cb Ti
C455 0.050 max 0.50 max 0.040 max 0.030 max 0.50 max 11-12.5 7.5-9.5 1.5-2.5 0.50 max 0.50 max 0.80-1.4

Physical Constants

Density0.280 lb/in3
Density7.76 g/cm3


No info about Heating currently available for this material.

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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