Copper Bars
Due to copper's excellent conductive properties, it has been widely used as the material of machine windings, breaker contacts, electronic appliance parts, and other electronic uses.
1. Chemical Composition:
Chemical Composition( %,Max.) | |||||||||||
Cu+Ag | P | Bi | Sb | As | Fe | Ni | Pb | Sn | S | Zn | O |
≥99.97 | 0.001 | 0.001 | 0.002 | 0.002 | 0.005 | 0.002 | 0.003 | 0.002 | 0.002 | 0.002 | 0.001 |
2.Product Specifications:
Temperature | Thickness mm | Width mm |
TMY(Hard) | 2~50 | 10~250 |
TMR(Soft) | 2~80 | 10~80 |
3. Tolerance:
Thickness a mm | Width Tolerance mm | |||
b≤50.00 | 50.00 | 100.00 | 200.00 | |
a≤2.80 | ±0.03 | — | — | — |
2.80≤4.75 | ±0.05 | ±0.08 | — | — |
4.75≤12.50 | ±0.07 | ±0.09 | ±0.12 | ±0.30 |
12.50≤25.00 | ±0.10 | ±0.11 | ±0.13 | ±0.30 |
25.00 | ±0.15 | ±0.15 | ±0.15 | — |
4. Thickness Tolerance:
Width b mm | Tolerance mm |
b≤25.00 | ±0.13 |
25.00≤35.50 | ±0.15 |
35.50≤100.00 | ±0.30 |
100.00 | ±0.3% b |
5. Semi diameter of Round Corner:
When the thickness is less than 6.30mm, the maximum semi-diameter of round corners can be 1.5mm. When the thickness is greater than 6.70mm, the maximum can be 2.0mm.
6. Flatness:
The flatness on narrow width is less than 5mm when the length is 1m.
7. Mechanical Performance:
It won't crack when bent at 90°.
Type | Bar/Wire | ||
Tensile Strength MPa | Elongation % | Hardness HV | |
WTMR | ≥206 | ≥35 | — |
WTMY | CR | CR | CR |
CR: Customer Requirement. | |||
8. Electrical Parameters:
Type | Dc Resistivity (Ω·mm2/m) | Conductivity (%IACS) |
WTMR | ≤0.017241 | ≥100 |
WTMY | ≤0.01777 | ≥97 |
