NAS 631G@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 iMPaj |
Tensile strength iMPaj |
Elongation ij |
Hardness iHVj |
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
@