China · CNS
SN 400 A
CNS G 3262:2014 — Rolled steels for building structure（equal CNS 13812）
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| B | 0.0008 | |||
| C | 0.24 | For 6 mm or over | For 6 mm or over | |
| Other | The alloy elements other than those in the table may be added | The alloy elements other than those in the table may be added | ||
| P | 0.05 | |||
| S | 0.05 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| steel products, 16 < t <= 40mm, t | ≥235 | 400–510 | ≥21 | |||
| steel products, 40 < t <= 100mm, t | ≥215 | 400–510 | ≥23 | |||
| steel products, 6 < t <= 16mm, t | ≥235 | 400–510 | ≥17 |