Copper bus-bar (Mechanical properties of copper bus-bar) Code Quality Cu % Tension Test Flexibility Test Conduc-tivity % 20o Properties and Usage Thick- ness mm Tensile Strength Kgf/mm2 (N/mm)2 Elon-gation (%) Thick- ness mm Angle of Flexibility Inner radius C1020BB C1100BB 0 Over 99.90 2~30 Over 20 Over(196) Over 135 2~15 180 o 0.5 times of thickness Over100 Excellent ConductibilityFor bus bar, switch bar of Surface part, circuit breaker, Electric Transformer, rotator 1/4H 22~28 (216~275) Over 25 One times of thickness Over 98 1/2H 25~32 (245~314) Over 15 90 o 1.5 times of thickness H Over 28 Over (275) Over 97