Oxygen free copper
Overview
Oxygen-free copper is pure copper that does not contain oxygen and does not contain any deoxidizer residues. But it actually contains very small amounts of oxygen and some impurities. According to the standard, the content of oxygen is not more than 0.003%, the total content of impurities is not more than 0.05%, and the purity of copper is greater than 99.95%.
Characteristics
Oxygen free copper has no hydrogen embrittlement, high conductivity, good processing and welding properties, corrosion resistance and low temperature properties.
Copper has high electrical and thermal conductivity, good weldability, excellent plasticity and ductility, excellent cold working performance and non-magnetic, and dispersed oxygen-free copper overcomes the shortcomings of low yield strength after annealing and creep resistance at high temperatures, and has the characteristics of high temperature, high strength and high thermal conductivity, which is highly valued by electronic materials experts.
Application
At present, copper and its alloys have been widely used in electronics industry. In vacuum electronic devices, oxygen-free copper has ranked first among the seven structural materials in the field.
Material
| ASTM | C10100 | C10200 | C10300 | C10800 | C12000 | C12200 |
|---|---|---|---|---|---|---|
| Europe | CW008A | CW020A | CW024A | |||
| GB/T | TU00 | TU3 | TP1 | TP2 |
Chemical composition
| Material | Cu+Ag | P | O | Others |
|---|---|---|---|---|
| C10100 | ≥99.99 | ≤0.0003 | ≤0.0005 | See note |
| C10200 | ≥99.95 | ≤0.0010 | ||
| C10300 | ≥99.95 | 0.001-0.005 | ||
| C10800 | ≥99.95 | 0.005-0.012 | ||
| C12000 | ≥99.90 | 0.004-0.012 | ||
| C12200 | ≥99.90 | 0.015-0.040 |
Note: Ag≤0.0025, Bi≤0.0001, Sb≤0.0004, As≤0.0005, Fe≤0.0010, Ni≤0.0010, Pb≤0.0005, Sn≤0.0002, S≤0.0015, Zn≤0.0001, Te≤0.0002, Se≤0.0003, Mn≤0.00005, Cd≤0.0001
Technical norms
- ◎ ASTM B42
- ◎ ASTM B88
- ◎ ASTM B111
- ◎ ASTM B251
- ◎ ASTM B360
- ◎ EN 1057
- ◎ EN 12449
- ◎ EN 13348
- ◎ GB/T 5231
- ◎ GB/T 1527
- ◎ GB/T 1531
Product forms
Capillary tube
- ◎ OD 0.30 ~ 3.0 mm
- ◎ WT 0.05 ~ 0.5 mm
Precision seamless tube
- ◎ OD 3.0 ~ 100 mm
- ◎ WT 0.10 ~ 10.0 mm
Service
- ◎ Precision cutting
- ◎ Tube surface treatment, like ID surface super mirror polishing, best level could reach Ra0.0015um
- ◎ Tube deep processing, like coiling, bending, end forming, body forming, laser processing, various needles processing, built to drawing and sample, etc.