Italy · UNI
HS 18-1-1-5
UNI 2955-5:1982 — UNI 2955-5
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.75 | 0.85 | ||
| Co | 4.5 | 5.2 | ||
| Cr | 3.5 | 4.5 | ||
| Mn | 0.4 | |||
| Mo | 0.7 | 1 | ||
| P | 0.03 | |||
| S | 0.03 | |||
| Si | 0.5 | |||
| V | 1.1 | 1.6 | ||
| W | 17.2 | 18.7 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| forgings, Heat treated | HR ≥64 HRC | |||||
| forgings, annealed | HB ≤277 |