May 17 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Fabrication
Applications
Introduction
Copper mining has been in progress for more than 10,000 years. It is found in the minerals malachite, azurite, cuprite, chalcopyrite and bornite. Large deposits of copper ore are located in Chile, Peru, Zaire, Zambia, and Canada and the United States.
Copper UNS C19700 is a high copper alloy. Copper UNS C19700 possesses good corrosion resistance in natural, marine, and industrial atmosphere. It is resistant to stress corrosion cracking.
The following datasheet discusses the chemical composition and properties of copper UNS C19700.
Chemical Composition
The chemical composition of copper UNS C19700 is given in the following table.
|
Element |
Content (%) |
|
Iron, Fe |
0.3 - 1.2 |
|
Manganese, Mn |
0.05 max |
|
Cobalt, Co |
0.05 max |
|
Nickel, Ni |
0.05 max |
|
Lead, Pb |
0.05 max |
|
Tin, Sn |
0.02 max |
|
Zinc, Zn |
0.02 max |
|
Phosphorus, P |
0.1 - 0.4 |
|
Magnesium, Mg |
0.01 - 0.2 |
|
Copper, Cu |
Balance |
Physical Properties
The following table discusses the physical properties of copper UNS C19700.
|
Properties |
Metric |
Imperial |
|
Density |
8.9 g/cm3 |
0.323 lb/in3 |
|
Melting point |
1069 - 1086 °C |
1956 - 1987 °F |
Mechanical Properties
The mechanical properties of copper UNS C19700 (H02-temper) are tabulated below.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
380 MPa |
55100 ksi |
|
Yield strength |
315 MPa |
45700 ksi |
|
Modulus of elasticity |
121 GPa |
17500 ksi |
|
Elongation |
10% |
10% |
|
Hardness, Rockwell B |
68 |
68 |
|
Machinability |
20 |
20 |
Thermal Properties
The thermal properties of copper UNS C19700 (H02-temper) are tabulated below.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@20-100°C/68-212°F) |
15.8 µm/m°C |
8.78 µin/in°F |
|
Thermal conductivity |
320 W/mK |
2220 BTU in/hr.ft².°F |
Fabrication
Welding - Soldering and brazing of copper UNS C19700 is rated as excellent. Gas shielded arc welding is rated as excellent. This alloy can also be welding using laser and resistance welding techniques.
Cold and Hot Working – This alloy possesses excellent capacity for both cold and hot forming.
Applications
Copper UNS C19700 is basically suited for applications requiring excellent formability coupled with high strength and conductivity.
Copper UNS C19700 finds application in:
-
Stamped parts
-
Electrical and electronic connectors
-
Circuit breaker components
-
Lead frames
-
Fuse clips
-
Cable shielding.