8mmCopper Rod
 
3mmCopper Rod
¡¡Copper Rod
Main specification: ¦µ3mm,¦µ8mm
Complying with standard GB3952-89
Appearance: shining surface, with no scar and no flanged edge.
Copper content: 99.95%
Oxygen content: 200~500PPM
Conductivity(at 20¡æ) : 100%(IACS)
Extension rate: 38%
Rebounding rate: very low
Softening rate: extremely good.
Single rotating test >53 rounds
Double rotating test: no visible crack
Surface oxidation layer: 400
Tensile strength: 25kg/mm

 
Attached table of diameter and allowable bias
nominal diameter
6.0¡«6.35
>6.35¡«12.0
>12.0¡«19.0
>19.0¡«25.0
allowable bias

+0.5
¡À0.4
¡À0.5
¡À0.6
-0.25


attached table of electric resistance rate
 
electric resistance rate p20¦¸¡¤mm2/m not greater than
3mm
0.01777
8mm
0.017241