C101/CW004A is the designation for the 99.9% pure copper used in a range of engineering applications.
C101/CW004A is also known as HC or high conductivity copper. It has a nominal conductivity of 100% IACS (International Annealed Copper Standard). It also has high thermal conductivity.
This is therefore the material of choice for use in conductors and electrical components but not when the service environment is a reducing atmosphere. It is also very popular with architects for applications where the corrosion resistance is required for building applications. Over time the C101 will also develop the weathered copper, green patina, appearance that offers additional corrosion resistance and a desirable look.
High ductility and impact strength also serve to make C101/CW004A an extremely versatile material.
C101/CW004A is also the base material from which common brasses and bronzes are produced.
| Product Form | Imperial Sizes | Metric Sizes | ||
|---|---|---|---|---|
| From | To | From | To | |
| Round Bar HDHC | 1⁄4" | 4" | 10mm | 50mm |
| Flat Bar HDHC | 1⁄2" x 1⁄8" | 6" x 1⁄2" | 20mm x 5mm | 200mm x 10mm |
| Sheet HH- 2m x 1m | - | - | 0.9mm | 4.0mm |
| Sheet HH - 1.2m x 0.6m | - | - | 1.6mm | 2.0mm |
| Sheet HH - 4' x 2' | 20 swg | 10swg | - | - |
C101/CW004A HC Copper corresponds to the following designations but may not be a direct equivalent:
| Chemical Element | % Present |
|---|---|
Copper (Cu) | 99.90 - 0.00 |
Others (Total) | 0.00 - 0.10 |
| Mechanical Property | Value |
|---|---|
Proof Stress | 50-340 MPa |
Tensile Strength | 200-360 MPa |
Elongation A50 mm | 50-5 % |
Hardness Vickers | 40 to 110 HV |
| Physical Property | Value |
|---|---|
Density | 8.92 g/cm³ |
Melting Point | 1083 °C |
Thermal Expansion | 16.9 x10-6 /K |
Modulus of Elasticity | 117 GPa |
Thermal Conductivity | 391.1 W/m.K |
Electrical Resistivity | 0.0171 x10-6 Ω .m |
Electrical Resistivity | 100 % IACS |
Soldering of C101/CW004A is excellent. Brazability and butt welding are also rated as good. Gas shielded arc welding has a fair rating. All other welding processes are not recommended.
C101/CW004A is very readily hot worked.
Solution treatment or annealing can be done by rapid cooling after heating to 370-650°C.
Corrosion resistance is either good or excellent in most environments and atmospheres other than those containing ammonia ions.
C101/CW004A can be readily cold worked. When in the annealed condition, it can be readily bent to shape and has excellent ductility.
It work hardens relatively slowly and can be annealed in neutral or oxidising atmospheres.
C101/CW004A has a machinability rating of 20 where Brass CZ121/CW614N is 100.
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