China · GB
B5
GB/T 2040:2017 — Sheet of copper and copper alloy
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.03 | |||
| Cu | Bal | Bal | ||
| Fe | 0.2 | |||
| Ni+Co | 4.4 | 5 | ||
| P | 0.01 | |||
| Pb | 0.01 | |||
| S | 0.01 | |||
| Total Others | 0.5 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| H04, 0.5 <= t <= 10mm, t | ≥370 | ≥10 | ||||
| M20, 7 <= t <= 14mm, t | ≥215 | ≥20 | ||||
| O60, 0.5 <= t <= 10mm, t | ≥215 | ≥30 |