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NAS 631G@Precipitation Hardened High Strength Stainless Steel for Springs

Characteristics of NAS 631

ENAS 631 can be further hardened by cold rolling or sub-zero treatment to transform to martensite, or by precipitation hardening of Al compound.

EHardening after forming makes further strengthened parts.

ENAS 631 is comparable to 17-7PH (17%Cr-7%Ni precipitation hardened) stainless steel.

Chemical Composition

(%)

- C Si Mn P S Ni Cr Al
Specification …0.09 …1.00 …1.00 …0.040 …0.030 6.50`
7.75
16.00`
18.00
0.75`
1.50
Example 0.081 0.30 0.92 0.025 0.0006 7.24 16.31 1.06

Mechanical Properties


- Dimension (mm)
(Thickness x Width)
Finish 0.2% Proof stress
iMPaj
Tensile strength
iMPaj
Elongation
i“j
Hardness
iHVj
Examples 0.2~110 2D 255 865 31 159
0.2~250 3/4H - 1325 7 422
0.2~218 3/4H - 1306 8 426

Application

Various kinds of springs
@Torsion bar
@Stabilizer


@

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