17-4 PH Stainless Steel is a precipitation hardening martensitic stainless steel. Typical usage is seen in applications requiring high strength and a modest level of corrosion resistance. Strength and toughness desired can be manipulated by the temperate range in the heat treatment process.
Below you will find typical applications of 17-4 PH steel as well as the metals composition and mechanical properties. Learn more about or value-added services that we offer to help you expedite the current job you have at hand.
Best Stainless offers high-quality standards including UNS S17400, AMS 5643, ASTM A564, and ASTM A693 Grade 630.
17-4 PH stainless steel can be used for a variety of applications including pump shafts, oil path, mechanical seals, and within the aerospace industry. Its composition is carbon, chromium, Columbian + tantalum, copper, manganese, nickel, phosphorous, silicon, and sulfur.
17-4 ph Applications
- Pump Shafts
- Oil Patch
- Mechanical Seals
- Aerospace
17-4 ph Standards
- UNS S17400
- AMS 5643
- ASTM A564
- ASTM A693 Grade 630
17-4 ph Composition(%)
- Carbon 0.070 max
- Chromium 15.00 – 17.50
- Columbian + Tantalum 0.15 – 0.45
- Copper 3.00 – 5.00
- Manganese1.00 max
- Nickel 3.00 – 5.00
- Phosphorus 0.040 max
- Silicon 1.00 max
- Sulfur 0.030 max
17-4 PH Stainless Steel Mechanical Properties
| 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 |
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