SUS631 Stainless Steel Strip 17-7PH Cold Rolled Stainless steel Coil
17-7PH is a precipitationhardening stainless steel that provides high strength and hardness,
excellent fatigue properties, good corrosion resistance, good formability, and minimum distortion upon heat treatment.
Stainless 17-7PH provides valuable property combinations particularly well suited for aerospace applications.
Material 17-7PH stainless also provides benefits for other applications requiring high strength and
good corrosion resistance, as well as excellent properties for flat springs at temperatures up to 600°F (316°C).
Material 17-7PH requires three essential steps in heat treating:
1) Austenite conditioning.
2) Cooling to transform the austenite
2) to martensite.
3) Precipitation hardening to
2) Condition TH 1050 or RH 950.
To obtain the highest mechanical properties from the alloy, Condition A material is transformed to martensite at
the mill by cold reduction to Condition C.
Hardening to Condition CH 900 is accomplished with a single, low-temperature heat treatment.
Chemical composition % weight
| C | Si | Mn | P | S | Cr | Ni | Al |
| 0.09 | 1.00 | 1.00 | 0.040 | 0.030 | 16.00~18.00 | 6.50~7.75 | 0.75~1.50 |
Mechanical properities
| Property | Condition A | TH1050 | RH950 | C | CH900 |
| UTS, Mpa | 896 | 1379 | 1620 | 1517 | 1827 |
| 0.2% YS, Mpa | 276 | 1276 | 1517 | 1310 | 1793 |
| Elongation % in 2'' | 35 | 9 | 6 | 5 | 2 |
| Hardness, rockwell | B85 | C43 | C48 | C43 | C49 |
Specifications
AMS 5528 Sheet, Strip and Plate
AMS 5529 Sheet and Strip–Cold Rolled
MIL-S-25043 Plate, Sheet and Strip
ASTM A 693 Plate, Sheet and Strip
(Listed as Grade 631-UNS S17700)
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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