电缆主要材料
Main cable materials
1、铜丝：
1. Copper wire:
采用电解铜作为原料，经连铸连轧工艺制成的的铜线称为低氧铜线；经上引法制成的铜线称为无氧铜线。
The copper wire made of electrolytic copper by continuous casting and rolling process is called low oxygen copper wire; The copper wire made by up drawing method is called oxygen free copper wire.
低氧铜线含氧量为100~250ppm，含铜量为99.9~9.95%，导电率为100~101%。
The oxygen content of low oxygen copper wire is 100~250ppm, the copper content is 99.9~9.95%, and the conductivity is 100~101%.
无氧铜线含氧量为4~20ppm，含铜量为99.96~9.99%，导电率为102%。
Oxygen content of oxygen free copper wire is 4~20ppm, copper content is 99.96~9.99%, and conductivity is 102%.
铜的比重为8.9g/cm3。
The specific gravity of copper is 8.9g/cm3.
2、铝线：
2. Aluminum wire:
用作电线用的铝线都要进行退火软化过。用作电缆用的铝线一般不用软化。
Aluminum wires used for electric wires shall be annealed and softened. Aluminum wires used for cables generally do not need to be softened.
电线电缆用的铝的电阻率要求达到0.0泥杆 保定古筝 塑料增韧剂 拱形护坡模具 保定空调维修  托辊生产线28264Ω.mm2/m，铝的比重为2.703g/cm3。
The resistivity of aluminum used for wires and cables shall reach 0.028264 Ω. mm2/m, and the specific gravity of aluminum shall be 2.703g/cm3.
3、聚氯乙烯（PVC）：
3. Polyvinyl chloride (PVC):
聚氯乙烯塑料是以聚氯乙烯树脂为基础，加入各种配合剂混合而成的，如防老剂、抗氧剂、填料、光亮剂、阻燃剂等，其密度为1.38～1.46g/cm3左右。
PVC plastic is based on PVC resin and mixed with various additives, such as anti-aging agent, antioxidant, filler, brightener, flame retardant, etc. Its density is about 1.38~1.46g/cm3.