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Materials

Precipitation hardening stainless steel 17-4 PH

Range of application

The material is the most widely used of all the precipitation-hardening stainless steels. Its valuable combination of acid and corrosion resistance and strength as well, gives designers opportunities to get  prototypes or production parts in the following fields: plant engineering, automotive industry, medical technology and components for moulds.

Technical data after recommended heat treatment

1 Preliminary values according to ASTM A564/A564M-13 UNS S17400.
2 Preliminary values subject to change or update.
Yield Point Rp0,21 1170 N/mm2
Tensile Strength Rm1 1310 N/mm2
Elongation A 1 10 %
Thermal conductivity λ2 16 Wm/k
Hardness 1 388 HB

Heat treatment

Solution annealed at temperatures of 1025 – 1055 °C, followed by a rapid cooling down in water, air or oil. Heat up to 480 °C and maintain temperature for 1 hour. Subsequently allow the component cooling down at ambient atmosphere.

Chemical Composition

COMPONENT   INDICATIVE VALUE (%)

Fe      Balance
C        0 – 0,07
Mg     0 – 1,00
P        0 – 0,04
S        0 – 0,03
Si       0 – 1,00
Cr      15,00 – 17,50
Ni      3,00 – 5,00
Cu     3,00 – 5,00