Italy · UNI
HS18-0-1
UNI 2955-5:1982 — UNI 2955-5
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.73 | 0.83 | ||
| Cr | 3.5 | 4.5 | ||
| Mn | 0.4 | |||
| P | 0.03 | |||
| S | 0.03 | |||
| Si | 0.5 | |||
| V | 0.9 | 1.2 | ||
| W | 17.2 | 18.7 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| bars, HB | 锻件 退火 269 | |||||
| bars, HR | 锻件 Heat treated ≤64 |
Heat treatment
| Type | 1 |
|---|---|
| Heat-treatment curve | TTT |
| Heat-treatment curve | Hardness-Tempering |
| Heat-treatment curve | CCT |