BS C110 / Cu-OFE Oxygen-free Copper



C110 is the purest grade of oxygen-free copper, with a 99.99% copper content. With much tighter limits on impurities than other grades, C110 offers the highest electrical and thermal conductivity values available from a commercially available copper alloy and is not susceptible to embrittlement when hardened. Specified for electronic applications requiring freedom from harmful impurities and oxide which can impair and contaminate electronic devices, C110 also has high ductility and is readily cold worked.

Related Standards

Equivalent Materials

Chemical properties


Weight %



99.99 %

This material data has been provided by Columbia Metals.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.