Canada · CSA
400AT
G40.20/G40.21 — General requirements for rolled or welded structural quality steel/Strucrtural quality steel
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.2 | |||
| Cr | 0.7 | |||
| Cr+Ni | 0.4 | |||
| Cu | 0.2 | 0.6 | ||
| Mn | 0.75 | 1.35 | ||
| Nb+V | 0.1 | |||
| Ni | 0.9 | |||
| P | 0.03 | |||
| S | 0.04 | |||
| Si | 0.15 | 0.4 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| heavy plate, sections, rolled, <= 40 mm | ≤400 | ≤520 | ≤18 | ≤27 |