17-7 PH Stainless Steel - Spring Wire Properties

The use of stainless spring steels has increased considerably in recent years. Several new compositions are now available to withstand corrosion. All of these materials can be used for high temperatures up to 650°F.

convert to metric units

17-7 PH
ASTM A 313 (631)

Nominal Chemistry

Cr	16.0	-	18.0%
Ni	6.5	-	7.5%
Al	0.75	-	1.5%

Minimum Tensile Strength
psi x 10³

Cond CH
235-335

E - Modulus of Elasticity
psi x 10⁶

29.5

Design Stress % Minimum Tensile

G - Modulus in Torsion
psi x 10⁶

11.0

Maximum Operating Temperature
°F

650

Rockwell Hardness

C38-57

Density
lb/in³

0.286

Shear Modulus
c GPa

11600 80.0

Method of Manufacture
Chief Uses
Special Properties

Cold drawn & precipitation hardened after fabrication. High strength and general purpose corrosion resistance. Slightly magnetic in spring temper.

Equivalent or Common Trade Names

17-7 stainless steel
UNS S17700
ASTM A313
ASTM A613
AISI 631
AMS 5678
AMS 5529
SAE J217

*Note: All material properties are provided for general reference purposes only. We recommend you to contact Optimum Spring during the material selection process.

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