Aerospace, Chemicals, Food Processing, Medical, Nuclear, Paper & Pulp
One Material:
Many Applications
Developed by Armco, Inc. (now AK Steel), 17-4 PH,* combines
high strength and high hardness with excellent corrosion
resistance, fracture toughness and heat treatment properties.
When you depend on AMETEK Specialty Metal Products,
you can be sure you’re getting the highest quality 17-4 PH
powder for manufacturing: Aircraft Fittings, Braces, Chemical
reactor4
Processing Components, Coupling, Fasteners, Gas Turbines,
Gears, Hydraulic Actuators, Jet Engines, Nuclear Reactor
Parts, Pump Shafts, Rocket & Missile Components, Valve
Stems and Wear Rings.
17-4 PH: The Workhorse of  Precipitation-Hardening Stainless Steels
Easy Machinability
When machined, 17-4 PH produces long, gummy chips.
While soft and ductile in annealed condition, it is capable of
high hardness properties with a single precipitation or aging
treatment.  It can be machined in annealed condition, but
condition H1150M (i.e., the softest condition for easiest
fabrication) yields the best results. If machined in condition
H1150M, post-machining solution treatment of parts is
required prior to final hardening.
*17-4 PH is a registered trademark of AK Steel.
The data herein are subject to revision without notice. Since AMETEK products, and the information given and
recommendations made herein, may be used under conditions beyond our control, AMETEK makes no guarantee,
either express or implied, concerning the sustainability of our products, or the applicability and accuracy of the
information, or recommendations, in any specific situation.  User is solely responsible for determining the suitability
of AMETEK products of any specific purpose.
Powder Sizes (Standard)
Superior Physical & Mechanical Properties
17-4 PH:  Physical Properties
The physical properties of 17-4 PH stainless steel make it weldable by common fusion and resistance techniques.  Among members of the precipitation hardening class of stainless steels, 17-4 PH has the best weldability. If a weld filler is required, AWS E/ER 630 is most often specified. In powder processing 17-4 PH, standard practices can be employed to facilitate good lubricant burnoff.  This step prevents carburizing, which can adversely affect mechanical properties.  When sintering 17-4 PH, it is necessary to use hydrogen only.  Although sintering can be conducted at temperatures as low as 2050°F, higher temperatures will yield better properties.
17-4 PH:  Mechanical Properties
These line graphs show the mechanical properties of 17-4 PH that was aged for 1 hour at 900°F (“H 900 condition”), which produces maximum strength.  The material was lubricated with Acrawax C and compacted at 48tsi.
Sintered & Hardened in Hydrogen (H 900 Condition)
Specifications for 17-4 PH are: AISI 630, AMS 5604, AMS 5622, AMS 5643, ASTM A564 (630), ASTM A693 (630), ASTM A705 (630), MIL C-24111, MIL P-47183, MIL S-81591 and UNS S17400.
Powder Processing
Standard P/M Compaction Data
5 3  (%!$15!24%23
P.O. Box 427
Eighty Four, PA 15330  USA
Tel:  +1 724-225-8400
Innovative & Advanced Metallurgical Technology

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