It has good mechanical properties, high strength and plasticity, can withstand cold and hot pressure processing well, and has a tendency to corrode and crack.
C2720 | Cu | Zn | Ni | Fe | Sn |
62.0~64.0 | margin | ≤0.3 | ≤0.05 | ≤0.1 |
Electronic components. Precision instruments. Automation machinery. Auto parts. Door and window accessories. Water pipes and bathroom equipment. Small hardware, daily necessities, screws, etc.
Physical properties (The following values are based on the lowest temperature at a temperature of 20°C-300°C) | |
Weight | 8.45 g/cm ³ |
Electrical Conductivity | 24 %IACS |
Heat Transfer Number | 121 W/(m·K) |
Coefficient of Thermal Expansion | 20.2 10-6/ K |
Elastic Modulus | 110 GPa(KN/mm2) |
150℃x1000h Stress relaxation rate | 58% |
Conditions | Tensile strength | Yield strength | Elongation | Hardness | 90 degree bending thickness≤0.5mm | |
G/W | B/W | |||||
R300 | 300-370 | ≤180 | ≥38 | 55-105 | 0 | 0 |
R350 | 350-430 | ≥170 | ≥19 | 95-125 | 0 | 0 |
R410 | 410-490 | ≥300 | ≥8 | 120-155 | 0 | 0 |
R480 | 480-560 | ≥430 | ≥3 | 150-180 | 0.5 | 2 |
R550 | ≥550 | ≥500 | - | ≥170 | 1 | 3 |
R630 | ≥630 | ≥600 | - | ≥190 | - | - |
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