17-4 PH
H900 hardened · 40–44 HRC
S174001.4542ASTM A564 / AMS 5643REFERENCE DATA
MACHINING IDENTITY17-4 PH · H900 · 40–44 HRCDo not enter cutting parameters or quote until condition and hardness are confirmed.
ISO GROUPISO M
HARDNESS40–44 HRC
MACHINABILITY4 / 5
CONDITIONH900
FAMILYPH stainless
UNSS17400
EN / DIN1.4542
ASTM / AMSASTM A564 / AMS 5643
MAIN INDUSTRIES
Aerospace, valves, pump shafts applications. The machinability score changes with the selected condition.
MACHINABILITY SCALE
1EasyAluminium, magnesium, low-carbon steel. The problem is distortion and chip evacuation.
2ModerateFerritic/martensitic steel, boiler steels, cast valve materials.
3DifficultAustenitic and PH stainless, standard duplex, CP titanium.
4Very difficultSuper duplex, super austenitic, Ti-6Al-4V and beta titanium, hardened steel.
5ExtremeNickel- and cobalt-based superalloys, refractory metals, turbine castings.