OFHC Copper, Apparent Density 23 - 42 gcc, Type granules

Oxygen free high conductivity copper is crafted by the direct conversion of selected refined cathodes under carefully controlled conditions to avert any contamination of the pure oxygen, Free metal during processing. The method of producing ofhc copper insures extra high grade of metal with a copper content of 99. 996%. With so small a content of extraneous elements, The inherent properties of elemental copper are brought forth to a high degree. Characteristics are high ductility, High and low volatility under, Good creep resistance, High impact strength, Electrical and ease of, Thermal conductivity welding high vacuum. Oxygen free high conductivity copper contains less than 10 ppm oxygen in the metal and is entirely free from copper oxide particles. Lower oxygen content in oxygen free high conductivity copper has many advantages over etp copper as shown in the following. Ofhc copper etp coppercontains less than 10 ppm of oxygen. . 001% oxygen superior electrical and thermal conductivity. Minimum 100% iacs conductivity. Passes close bend test hydrogen embrittlement test. Better thermal cycle behavior. Consistency in brazed & welded joints can be achieved. Etp copper contains 150, 400 ppm oxygen. . 015, .04% oxygen electrical and thermal conductivity may vary on processing semis. Minimum 99. 99% iacs conductivitycannot pass close bend test. Poor thermal cycle behavior. May lead to inconsistent brazed & welded joints. Most Designed for deployment in high vacuum devices. Not suitable