This standard prescribes the requirements for copper rods and bars intended for electrical purposes, primarily focusing on high conductivity applications like busbars. It specifies chemical composition, mechanical properties, electrical resistivity, and dimensional tolerances across varying tempers.
Specifies the requirements for copper rods and bars used for electrical applications.
Quick Reference Values
Minimum Copper Purity99.90% (as per electrolytic grade)
Max Electrical Resistivity (Annealed at 20°C)0.01724 Ohm-mm²/m
Reference Temperature for Resistivity20°C
Practical Notes
Specifying the exact temper (Annealed, Half-Hard, or Hard drawn) is critical during procurement, as increased cold-working improves mechanical strength but slightly reduces electrical conductivity.
Electrical resistivity testing must be strictly controlled at 20°C, or appropriate temperature compensation factors must be applied as per IS 3635.