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15-5 PH

(UNS S15500) Chromium-nickel-copper precipitation hardening stainless steel with high strength and moderate corrosion resistance. High strength up to about 600ºF. Hardened through age hardening (precipitation hardening) at 900, 1075 or 1075ºF with 900ºF age yielding the highest strength.


Element C Mn P S Si Cr Ni Cu
15-5 PH 0.04 0.75 0.020 0.005 0.50 14.5 4.8 3.5

Physical Constants

Density0.280 lb/in3
Density7.75 g/cm


Solution Anneal1900-1950ºF
Age Harden900ºF, 1075ºF, 1150ºF

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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