(M25) HV390
EN/DIN
CW102C
Copper Beryllium M25 is a free machining, high performance copper alloy. The properties of Copper Beryllium M25 minimize signal distortion in coaxial RF connectors and reduce power loss in circular connectors and contact probes. The M25 is available in reeled or coiled wire product forms and different temperatures to meet a variety of design requirements. After machining and forming, Copper Beryllium M25 parts can be easily heat treated and coated to achieve maximum mechanical and electrical performance. Applications requiring stability up to 175 ° C or reliable contact force in miniaturized designs specify Alloy M25. In demanding electronic applications, the M25 provides superior performance and reliability than any free-machining copper alloy Industrial standards: C17300, ASTM B-196, EN 12164, MIL-C-21657
Electrical Properties
|
Electrical Resistance
|
5.9 – 6.9 μΩ-cm
|
|
Magnetic permeability
|
1.00005
|
|
Magnetic susceptibility
|
4.0e-8
|
Process Properties
|
Machinability
|
Medium
|
|
Hot Forming
|
good
|
|
Cold Forming
|
good
|
Thermal Recovery
|
Softening Annealing
|
732 ℃
240 min
|
|
Stress Relieving Annealing
|
566 ℃
30 min
|
Descriptive Features
|
Alpha Phase Crystal Structure
|
Below cph, 815 ° C
|
|
Beta Phase Crystal Structure
|
Above bcc, 999 ° C
|
Optical Properties
|
Emissivity(0-1)
|
0.30
|
|
Reflection Coefficient, Visibility(0-1)
|
0.56
|
|
|
Dimensions mm |
|
CuBe2Pb
|
Ø
|
0.400 |
|
Ø
|
0.600 |
|
Ø
|
0.700 |
|
Ø
|
0.800 |
|
Ø
|
0.900 |
|
Ø
|
1.000 |
|
Ø
|
1.300 |
|
Ø
|
1.500 |
|
Ø
|
1.700 |
|
Ø
|
2.000 |
|
Ø
|
2.500 |
|
Ø
|
3.000 |
|
Ø
|
3.175 |
|
Ø
|
3.500 |
|
Ø
|
4.000 |
|
Ø
|
5.000 |
|
Ø
|
6.000 |
|
Ø
|
7.000 |
|
Ø
|
7.500 |
|
Ø
|
8.000 |
|
Ø
|
8.500 |
|
Ø
|
9.000 |
|
Ø
|
9.500 |
|
Ø
|
10.00 |
|
Ø
|
10.60 |
|
Ø
|
11.00 |
|
Ø
|
12.00 |
|
Ø
|
13.00 |
|
Ø
|
16.00 |
|
Ø
|
20.00 |
|
Ø
|
22.00 |
|
Ø
|
23.00 |
|
Ø
|
23.00 |
Copper Beryllium Bar - Chemical Composition
| Cu |
Ni+CO |
SN |
Fe |
MN |
ZN |
O |
Al |
|
| Bal. |
5.5 max |
0.2 max |
3.5 max |
1.5 max |
0.3 max |
0.4 max |
10.9 max |
|
C17300 Copper Beryllium (M25)
Alloy C17300 M25Copper Beryllium, which gets its strength from precipitation heat treating, is used typically in round insertion connector and sensor, RWMA applications in the aerospace, oil and gas, marine, performance racing, and plastic mold tooling industries, non-sparking safety tools, flexible metal hose, bushings, electro-chemical springs and bellows