17-4PH SUS630 Cold Rolled Stainless Steel Sheet And Strip In Coil
Grade 17-4PH (1.4542) is the most common example of the precipitation hardening stainless grades.
17-4PH stainless combines good corrosion resistance with high strength and good impact toughness.
17-4PH stainless grade combines the following characteristics:
- Good corrosion resistance (just below that of 304)
- High hardness and strength
- Controlled balance of mechanical properties by ageing (precipitation hardening)
- Improved toughness compared to 431 including use at sub-zero temperatures for the softer conditions
- Magnetic
- Thermal expansion comparable to carbon steel
- Easier to weld than martensitic grades like 420 and 431 stainless
17-4PH develops its high strength from the precipitation of copper particles in its martensitic matrix.
It comes in various conditions denoted by H plus ageing temperature in °F, for example H900, H1025 etc.
The higher the ageing temperature, the lower is the strength and the higher are the ductility and toughness.
The minimum 0.2% PS varies from 520 MPa to 1170 MPa depending on the condition.
The combination of high strength and good corrosion resistance finds uses in:
Drive shafts, bearings, gears, hydraulic rams, valve stems, load cells, bridge bearings, tensioning systems,
golf clubs, quick release pins, fasteners, aerospace, medical devices, food processing, conveying equipment,
fall arrest systems.
17-4PH stainless is the natural choice of high strength, corrosion resistant steel particularly where standard
martensitic grades like 431 aren’t quite good enough.
Chemical composition ( weight % )
| Grade | C | Si | Mn | P | S | Cr | Ni | Cb+Ta |
| SUS630, 17-4PH, S17400, EN 1.4542, DIN X5CrNiCuNb16-4 | 0.07 max | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 15.00~17.50 | 3.00~5.00 | 0.15~0.45 |
Product forms
17-4PH, SUS630 stainless steel sheet, plate, precision strip and coil
For Details, please Contact
WUXI GUANGLU Special Steel Co., Ltd.
Stainless martensitic • precipitation hardening steel • stainless ferritic — Our answer to your needs
Tel: +86 510 81812873
Email: export@guanglusteel.com
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