Why is oxygen-free copper high conductivity?
Conductivity in ordinary metals, such as copper or silver, is limited by the presence of impurities and other defects. By reducing the extremely low level of impurities the inherent properties of copper are enhanced to a high degree. The OFHC metals thus obtained have a copper content of 99.99%.
What kind of material is OFHC copper?
Overview of OFHC Copper Oxygen-free, high-conductivity (OFHC) copper—sometimes referred to as simply oxygen-free copper—is a copper material that has undergone electrolytic refinement to reduce the oxygen contained within it to very low levels (typically less than 1/100 of a percent).
What is C110 copper?
C110 Copper Alloy Wire (Cu-ETP) C110 is a commercial copper which is more economical than C102. It has good solderability and corrosion resistance and is used for high current applications.
What is C10200?
C10200 Oxygen Free Copper (CDA 102) High Conductivity (OFHC) Copper characteristics are high ductility, high electrical and thermal conductivity, high impact strength, good creep resistance, ease of welding, and low volatility under high vacuum.
What grade is OFHC copper?
99.99%
OFE (Oxygen-Free Electronic) or OFHC (Oxygen-Free High Thermal Conductivity) Copper is the highest purity grade of copper at 99.99%.
What is oxygen free high conductivity copper (OFHC)?
For these applications, the slightly more expensive oxygen free high conductivity copper (OFHC) containing less than 0.001% oxygen, is used. These two materials are most widely used for wire and strip conductors, for windings of a.c. and d.c. motors and generators and for transformers.
What is OFHC copper?
The method of producing OFHC copper ensures extra high grade of metal with a copper content of 99.99%. With so small a content of extraneous elements, the inherent properties of elemental copper are brought forth to a high degree.
What is the composition of high conductivity electrical copper?
The UNS database includes many different compositions of high conductivity electrical copper. Of these, three are widely used and two are considered oxygen-free. C10100 – also known as Oxygen-Free Electronic (OFE). This is a 99.99% pure copper with 0.0005% oxygen content.
Why is the conductivity of cold-sprayed copper lower than OFHC?
Since the conductivity of copper is very sensitive to oxygen content, a significant portion of the 15% reduction in the conductivity of the cold-sprayed copper as compared with OFHC can be reasonably attributed to the 0.3 wt.% oxide in the initial feedstock powder.
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