Wuxi Guanglu Special Steel Co., Ltd
WUXI GUANGLU SPECIAL STEEL CO., LTD. Stainless martensitic • precipitation hardening steel • stainless ferritic • specialty alloys — Our answer to your needs
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JIS SUS631 EN 1.4568 17-7PH Cold Rolled Stainless Steel Strip In Coil
SUS631-CSP, EN 1.4568, DIN X7CrNiAl17-7, S17700, The most representative precipitation hardened
steel grade which can be further hardened via heat treatment.
After precipitation hardening treatment, it shows extremely strong magnetism.
Typical application
Diaphragms, reed valves, mask frame springs, various other springs, bellows, etc.
Chemical composition ( weight % )
| Grade | C | Si | Mn | P | S | Cr | Ni | Al |
| SUS631-CSP, EN 1.4568 | 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 |
Product forms
Cold rolled Spring Stainless Steel strip
Grades and mechanical properties of the stainless steel strips for spring use
| Grade | Temper symbol | HV |
| 631 | O | 200 max. |
| 1/2H | 350 min. | |
| 3/4H | 400 min. | |
| H | 450 min. |
We provide high strength stainless steel strip for springs, grades including SUS301-CSP,
SUS304-CSP, SUS316-CSP, SUS631-CSP, SUS632J1-CSP, SUS420J2-CSP
according to JIS G4313 cold rolled stainless steel strip for spring.
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
