Cable is a device used to transmit or receive electrical signals, it consists of inner core, shielding, insulation and outer sheath, etc., of which the inner core is the core part of the cable, and the material it is made of has an important impact on the performance and life of the cable. The following are some common cable inner core materials:
1. Copper core cable: copper core cable is one of the most common types of cables, its inner core is made of pure copper. Copper has good electrical conductivity and is relatively expensive, hence the price of copper core cables is also relatively high.
2. Aluminium core cables: Aluminium core cables have an inner core made of pure aluminium. Although the conductivity of aluminium is not as good as copper, but its price is relatively low, so in some of the conductivity requirements are not high occasions, aluminium core cable is also widely used.
3. aluminium alloy cable: aluminium alloy cable core made of aluminium alloy. Aluminium alloy conductivity and mechanical properties are better than copper and aluminium, and the price is relatively low, so in some of the conductive properties and mechanical properties of the higher requirements of the occasion, aluminium alloy cable is also widely used.
4. steel core cable: steel core cable core made of steel. Steel conductivity and mechanical properties are better than copper and aluminium, but it is also more expensive, so in some of the conductivity and mechanical performance requirements of the occasion, steel core cable is also widely used.
In addition to the above several common cable core material, there are some special cable core material, such as silver core cable, nickel core cable, etc., their conductivity and mechanical properties are very good, but the price is also very expensive, so in some special occasions, such as aerospace, military and other fields, will use these special cable core material.
In short, the choice of cable core material needs to be based on the actual application occasions and needs to determine the different materials have different electrical conductivity, mechanical properties and price and other characteristics, the choice of the right material can improve the performance and life of the cable, but also can reduce costs.