Copper alloys exhibit very high electrical and thermal conductivities, offering twice the conductivity of aluminum and thirty times the conductivity of stainless steel. Other advantageous characteristics include outstanding strength (notably copper beryllium alloys) and corrosion resistance as well as antimicrobial properties. Copper is most commonly used in electrical and electronic applications.
Technical Data
| TYPE |
Be Cu 25 |
Copper 102 |
Phosphor Bronze A |
Cu Ni 715 |
| Cu |
97.6 - 98.0 |
99.95 |
94.8 |
69.5 |
| Sn |
|
|
5.0 |
|
| others |
Be 1.80 - 2.05
Co .18 - .30 |
|
P .2
|
Ni 30.0
Fe .5 |
| Density LB/CU IN |
.298 |
.323 |
.320 |
.323 |
Thermal
Expansion
Coefficient X
10-6/° C |
17.5 |
17.0 |
17.8 |
16.2 |
Thermal
Conductivity
W/M x K @ 100° C |
105 |
390 |
69.2 |
29.4 |
Electrical
Resistivity
MICROHM - CM |
7.81 |
1.71 |
11.5 |
39.5 |
Mechanical Properties
| COPPER MECHANICAL PROPERTIES |
| TYPE |
Condition |
Tensile PSI |
Yield 0.2% Offset PSI |
Elongation % IN 2 * |
Be Cu 25
 |
Annealed |
70,000 |
30,000 |
35 |
| Cold Rolled |
120,000 |
110,000 |
2 |
| Annealed and Aged |
175,000 |
150,000 |
3 |
| CR and Aged |
210,000 |
200,000 |
1 |
| Copper 102 |
Annealed |
35,000 |
10,000 |
40 |
| Cold Rolled |
57,000 |
53,000 |
2 |
Phosphor
Bronze A |
Annealed |
47,000 |
20,000 |
50 |
| 1/2 Hard |
68,000 |
45,000 |
30 |
| Hard |
82,000 |
65,000 |
10 |
| Spring |
100,000 |
90,000 |
3 |
| Cu Ni 715 |
Annealed |
70,000 |
25,000 |
40 |
* These values may be adjusted by control of process variable - consult HPM for desired values.