C7025 Type CuNi3SiMg Copper Alloy Strips
Description
C7025 (CuNi3SiMg) is a kind of copper alloy with high strength and high conductivity, especially in the later stage of alloy manufacturing process. This effect is like calendering again, which makes the material harder and stronger, and increases the conductivity and elongation at the same time.
(Other Name: CuNi3SiMg.)
Chemical Content(%)
| UALLOY Brand |
Nickel |
Silicon |
Magnesium |
Copper |
| UALLOY-C7025 |
3 |
0.65 |
0.15 |
Bal |
Mechanical Properties
| Density of g/cm³ |
8.8 |
| Electrical Conductivity @20ºC(% IACS) |
45 |
| Thermal conductivity @20ºCW/(mK) |
190 |
| Coefficient of Thermal Expansion per °C |
17.6 x 10-6 /K |
| Specific Heat J/(g·k) |
0.399 |
| Poisson's ratio |
0.33 |
| Modulus of Elasticity (10 3 MPA) |
130 |
| Status |
Tensile Strength |
Yield Strength |
Elongation |
Hardness |
| MPa |
ksi |
MPa |
A50% |
HV |
| R620(TM00) |
620-760 |
90-110 |
≥550 |
≥14 |
180-220 |
| R655(TM02) |
655-825 |
95-120 |
≥585 |
≥7 |
190-240 |
| R690(TM03) |
690-860 |
100-125 |
≥655 |
≥5 |
210-250 |
| R760(TM04) |
760-850 |
110-123 |
≥720 |
≥2 |
220-270 |
| R800(TM06) |
800-880 |
116-128 |
≥780 |
≥1 |
250-290 |
| R607(TR02) |
607-726 |
88-106 |
≥550 |
≥6 |
180-220 |
Processability
| Cold working |
Very Good |
| Cutting |
Not suitable |
| Plating |
Good |
| Hot Dip Galvanizing |
Good |
| Laser Welding |
Good |
| Resistance Welding |
Generally |
| Soldering |
Good |
Bending Performance (Bending Thickness: <=0.5mm; Bending Width: 10mm)
| Status |
90°R/T |
180°R/T |
| |
Good Way |
Bad Way |
Good Way |
Bad Way |
| R620(TM00) |
0 |
0 |
0.5 |
0.5 |
| R655(TM02) |
0.5 |
0.5 |
1.5 |
2 |
| R690(TM03) |
1 |
1 |
2 |
2 |
| R760(TM04) |
1.5 |
1.5 |
2.5 |
2.5 |
| R800(TM06) |
2 |
3 |
2 |
3.5 |
| R607(TR02) |
0.5 |
3 |
1 |
5 |
Applications
| Signal Connector |
Very Suitable |
| Power Connector |
Suitable |
| Miniaturized Connector |
Suitable |
| Switch/Relay |
Very Suitable |
| Semiconductor |
Very Suitable |
Audited Supplier 
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