Japan · JIS
A3-20H
JIS B1054-4:2013 — JIS B1054-4
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.08 | |||
| Cr | 17 | 19 | ||
| Cu | 1 | |||
| Mn | 2 | |||
| Nb+Ta | 1 | =＞10×%C | =＞10×%C | |
| Ni | 9 | 12 | ||
| P | 0.045 | |||
| S | 0.03 | |||
| Si | 1 | |||
| Ti | 0.8 | =＞5×%C | =＞5×%C |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| fasteners, cold worked, HV | HV ≥200 |