Cuprime Material Co., LTD., bearing the faith in the aggressive
development for new products, has migrated into the field of ever-changing and top-of-the-line demand for
electronics wiring material market such as: HI-END stereo cables, communication connection devices,
electronics parts, etc. In 2010, we collaborated with MEOA affiliated institutions and adopted OCC
manufacturing process (OHNO CONTINUOUS CASTING, JAPAN PAT.1049146) and developed 5N~7N ultra-high purity
single crystal copper with glossy, smooth and perfect surface. And now our R&D is migrating to field of
special alloy copper.
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● Single crystal copper wiring materials They are mainly used in high-end stereo cables,
high-tech electronics, communications and internet applications.
Single crystal copper has no crystalline boundary interface and can produce superior electric characteristics,
signal transmission capability, and is better than the manufacturing functionalities of general copper materials
thereby its application is specially used in fields like defense, medicine, commercial electronics,
ultra-high-speed transmission communication and internet applications, etc.
● Quality Characteristics
Single crystal copper can eliminate the signal attenuation source created at crystalline interface therefore
possess excellent audio features. With excellent electric and signal transmission capability, coupled with good
manufacturing plasticity (with elongation ratio increases more than 2 times), significant stress fatigue
resistance (with surface rate reduction increases more than 4 times) whereas it still does not suffer defects
resulted from crystal segregation, gas hole, cavity shrinkage and pressure roll, in addition it enhances the
glossy and flawless surface quality.
| Single crystal copper / cross-section enlarged 15 times |
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| Single crystal copper / longitudinal-section enlarged 15 times |
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| Unidirectional polycrystalline copper/ cross-section enlarged 15 times
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| Unidirectional polycrystalline copper / longitudinal-section enlarged 15
times |
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| 2.6mm / cross-section enlarged 100times |
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| 2.6mm / longitudinal-section enlarged 100 times |
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| 0.8mm / cross-section enlarged 200 times |
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| 0.8mm / longitudinal-section enlarged 200 times |
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● METAL CHEMICAL COMPOSITION
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Cu Unit：％，Other units：ppm |
| CMOCC |
Cu |
Fe |
Bi |
Sb |
As |
Sn |
Mn |
Co |
Si |
Ni |
Pb |
| 6N |
99.9998 |
<0.90 |
<0.001 |
<0.001 |
<0.001 |
<0.0008 |
<0.0008 |
<0.0007 |
<0.001 |
<0.0006 |
<0.080 |
| 7N |
99.99998 |
<0.07 |
<0.001 |
<0.001 |
<0.001 |
<0.0008 |
<0.0008 |
<0.0007 |
<0.001 |
<0.0006 |
<0.050 |
