Italy · UNI
Fe E 420 KT
UNI 7382:1975 — UNI 7382
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| Al | 0.015 | |||
| C | 0.2 | |||
| Cr | 0.4 | |||
| Cu | 0.6 | |||
| Mn | 1 | 1.6 | ||
| Mo | 0.4 | |||
| Nb | 0.015 | 0.06 | ||
| Ni | 0.7 | |||
| P | 0.03 | |||
| S | 0.03 | |||
| Si | 0.5 | |||
| Ti | 0.2 | |||
| V | 0.02 | 0.2 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| heavy plate, steel strip | ≤380；≤420；≤400；≤410 | ≤540 | ≤19 |