| 标准 | 牌号 | 体积电阻率Ω·mm2/m | 断裂 伸长率% | +25转反转 至断数 | (Cu + Ag)% | 杂质总含量% |
| GB/T 3952-2016 电工用铜线坯 | T1 | ≤0.017070 | ≥40 | ≥25 | ≥99.95 | ≤0.0065 |
| T2 | ≤0.017241 | ≥37 | ≥20 | ≥99.95 | 未规定 | |
| T3 | ≤0.017241 | ≥35 | ≥17 | ≥99.90 | ≤0.06 | |
| YS/T 793-2012 电工用火法精炼 再生铜线坯 | RT1 | ≤0.01707 | ≥40 | ≥30 | ≥99.90 | ≤0.10 |
| RT2 | ≤0.01724 | ≥37 | ≥25 | ≥99.90 | ≤0.10 | |
| RT3 | ≤0.01724 | ≥35 | ≥20 | ≥99.90 | ≤0.10 | |
| 优良再生铜杆 |
| ≤0.01715 | ≥40 | ≥25 | ≥99.90 | ≤0.10 |