OFHC

OFHC stands for Oxygen-Free High Conductivity copper. It is a type of high-purity copper characterized by extremely low levels of oxygen, typically less than 0.001%. This high purity is achieved through specialized melting and casting processes, often under vacuum or an inert atmosphere. The absence of oxygen and other impurities significantly enhances its electrical and thermal conductivity.

OFHC copper possesses electrical conductivity typically around 100% IACS (International Annealed Copper Standard), meaning its conductivity is at least as good as that of standard annealed copper. Its thermal conductivity is also exceptional, making it suitable for applications where efficient heat transfer is critical. Furthermore, OFHC copper exhibits good ductility and malleability, allowing it to be easily formed and worked.

Due to its superior electrical and thermal properties, OFHC copper is widely used in demanding applications. This includes electrical conductors in power generation and transmission, high-fidelity audio cables, electronic components, and vacuum technology. It is also employed in heat exchangers, cryogenics, and in certain medical equipment where high conductivity and purity are essential. The material's resistance to hydrogen embrittlement, a common issue with oxygen-containing copper alloys, further contributes to its utility in specialized environments.