Various properties of copper wire

1. Conductor Resistance—The resistance of a conductor is proportional to its length and inversely proportional to its cross-sectional area.

2. Conductivity—Based on a resistance of 1/58 ohm (0.017241 ohm) of a standard soft copper wire with a length of 1 m at 20 ° C and a cross-sectional area of ​​1 mm 2 , it is called 100% conductivity. The higher the resistance, the lower the conductivity and the inverse of the two.

3. Bending resistance - one end of the single wire is fixed, the other end is added with the weight to make it vertically downward, and then bent back and forth 180 until the wire breaks. The more the bending times, the stronger the bending resistance.

4. Pull-off force—The maximum load weight or force applied to the specimen to break it during the tensile test.

5. Tensile strength—In the tensile test, the sample is broken and the breaking force per unit area is withdrawn.

6. Elongation—The ratio of the length of the specimen that has been elongated to the original length after elongation to the specified standard distance. Conductors have different impedances at different temperatures. Generally, they are usually measured at 20 ° C or 25 ° C. The higher the temperature, the greater the impedance.