Hard Rolled Condition C 17-7PH Cold Rolled Stainless Steel Strip SUS631 Coil
17-7PH / 1.4568 is an austensitic chromium nickel stainless steel with aluminum addition.
Precipitation hardening grade with high strength and hardness, good corrosion resistance and
satisfactory formability (depending on heat treatment/”Condition”).
It is able to develop a very high strength due to the strengthening of aluminium particles.
It is usually found in strip or wire form for spring applications.
For e.g. retaining rings, springs, valves and gears, aircraft parts.
| Grade | C | Si | Mn | P | S | Cr | Ni | Al |
| 17-7PH, 1.4568, X7CrNiAl17-7, 631 | 0.09 max | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 16.00~18.00 | 6.50~7.75 | 0.75~1.50 |
This stainless 17-7PH grade combines the following characteristics:
- Good corrosion resistance better than 17-4PH stainless close to that of 304 stainless
- Very high strength up to 1700 MPa minimum UTS in EN 10151 or 1655 MPa minimum in ASTM A693
- Excellent fatigue strength
- Low distortion in heat treatment
- Weldable with matching consumables
17-7PH provides a combination of very high strength and moderate corrosion resistance.
Its metallurgy is complex involving several stages of processing to develop the necessary microstructure.
The highest level of strength is achieved by cold working to produce martensite followed by an
ageing treatment at about 480°C. This restricts the use of the grade to thin sheet and wire products.
Other heat treatment conditions are also available to produce softer and more ductile material.
Applications which illustrate these features include:
Springs, Belleville washers, aerospace, orthodontic wire, strain gauge, load cell, pressure transducer.
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
