Braze Alloys
Copper OFHC Technical Information
Oxygen free high conductivity (OFHC) copper brazing filler
Key Benefits
- Suitable for brazing under Vacuum, Hydrogen, inert atmosphere and in air with flux
- Ductile with good strength
Typical Applications
- Tooling for mining
- Heavy industrial equipment
- Automotive components
Nominal Composition by Weight
- between: 99.990% and 99.999% Cu
- the purest commercially available form of the metal
Suggested Base Materials
Iron, Tool/high speed & carbon/low alloy steel, Stainless steel, Nickel, Kovar, Monel, metallized ceramic.
Forms Available
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Copper OFHC Thermal Properties |
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|---|---|---|
|
°C |
°F |
|
|
Liquidus |
1083 |
1981 |
|
Solidus |
1083 |
1981 |
|
Copper OFHC Physical Properties* |
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|---|---|---|---|---|
|
Metric |
Imperial |
|||
|
Coefficient of Thermal Expansion (CTE) |
19.4 |
x10-6/°C for 20-500°C |
10.8 |
x10-6/°F for 68-932°F |
|
Thermal Conductivity (Calculated) |
398 |
W/(m*K) |
230 |
BTU/ft h °F |
|
Density |
8.93 |
Mg/m3 |
0.323 |
lb/in3 |
|
Yield Strength (0.2% offset) |
69 |
MPa |
10.0 |
x103 lb/in2 |
|
Tensile Strength |
221 |
MPa |
32.0 |
x103 lb/in2 |
|
Elongation (2in/50mm gage section) |
55 |
% |
||
|
Electrical Resistivity |
16.7 |
x10-9(ohm*m) |
||
|
Electrical Conductivity |
60 |
x106/(ohm*m) |
||
|
Recommended Brazing Temperatures |
1100 |
°C |
2012 |
°F |
|
Recommended Brazing Atmospheres |
10-5 mm Hg, H2, or inert gas |
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* Please note that all values quoted are based on test pieces and may vary according to component design. These values are not guaranteed in any way and should only be treated as indicative values. They should be used for guidance only and for no other purpose whatsoever.