Introduction
17-4PH martensite precipitation hardened stainless steel,alternate name and Designation UNS S17400 | Grade 630 | The production standard include AMS 5643 | ASTM A5604 | ASTM A693,it is mainly chemical is chromium and nickel。
Chemical composition (%)
Composition  | C  | Si  | Mn  | Cr  | Ni  | Cu  | P  | S  | Nb  | 
Min  | \  | \  | \  | 15.5  | 3.0  | 3.0  | \  | \  | 0.15  | 
Max  | 0.07  | 1.0  | 1.0  | 17.5  | 6.0  | 5.0  | 0.035  | 0.03  | 0.35  | 
Mechanic condition
Material Type  | Condition  | Ultimate Tensile Strength (PSI)  | 0.2% Yield Strength (PSI)  | Elongation (% In 2in.)  | Reduction Of Area (%)  | Hardness Brinell  | Hardness Rockwell  | 
17-4 PH  | H900  | 190,000  | 170,000  | 10  | 40  | 388  | C40  | 
H1025  | 155,000  | 145,000  | 12  | 45  | 331  | C35  | |
H1075  | 145,000  | 125,000  | 13  | 45  | 311  | C32  | |
H1150  | 135,000  | 105,000  | 16  | 50  | 277  | C28  | |
H1150-M  | 115,000  | 75,000  | 18  | 55  | 255  | C24  | |
H1150-D  | 125,000  | 105,000  | 16  | 50  | 255 min – 311 max  | C24 – 33  | 
Physical Performance
Density  | melting point  | J/Kg.k  | Magnetic  | Thermal conductivity  | CLTE  | 
7.78g/m3  | 14000-1440℃  | 502J/(Kg.℃)  | Yes  | 17~23W/(m·K)(100~500℃)  | 10.8~11.36×10⁻⁶/K(20~300℃)  | 
Available Products and Specifications:
 AMS 5604 Sheet, Strip and Plate
 AMS 5643 and 5622 Bars (Flat, Hex, Round, Square), Wire, Forgings, Tubing and Rings
 ASTM A 693 Plate, Sheet and Strip
Advantage:
(1) Corrosion resistance:
(2) Magnetism:
(3) Deformability:
(4) Wear resistance:
(5) Weldability:
Application :
(1) Aerospace: used to manufacture structures and parts.
(2) Biomedical: used to manufacture hand tools.
(3) Chemical processing: used to manufacture food processing equipment.
(4) Pulp and paper: used to manufacture paper mill equipment.
(5) Oil and gas: used to manufacture foil, helicopter deck platforms, etc.
(6) Nuclear waste treatment and storage: used to manufacture related equipment.
(7) General metal processing industry: used to manufacture parts of various shapes and sizes.
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