材料 | 电阻率ρ(20℃)Ω.m | 平均电阻温度系数α(0℃~100℃)1/℃ |
铜 | 1.75 × 10−8 | 4.1 × 10−3 |
铝 | 2.85 × 10−8 | 4.2 × 10−3 |
黄铜(铜锌合金) | (2~6) × 10−8 | 2.0 × 10−3 |
铁(铸铁) | 5 × 10−7 | 1.0 × 10−3 |
钨 | 5.48 × 10−8 | 5.2 × 10−3 |
铂 | 2.66 × 10−8 | 2.47 × 10−3 |
钢 | 1.3 × 10−7 | 5.77 × 10−3 |
汞 | 4.8 × 10−8 | 5.7 × 10−4 |
康铜 | 4.4 × 10−7 | 5.0 × 10−6 |
锰铜 | 4.2 × 10−7 | 5.0 × 10−6 |
镍铬合金 | 1.08 × 10−6 | 1.3 × 10−6 |
铁铬铝合金 | 1.2 × 10−6 | 8.0 × 10−5 |
石墨 | 8.0 × 10−6 | −5.0 × 10−4 |