Tough Pitch Copper
Refined copper in which the oxygen content has been adjusted to between about 0.02 and 0.08 percent. It is at least 99.5 percent pure. Tough pitch copper has a minimum electrical conductivity of 100 percent IACS.
The Wire Association Int.
71 Bradley Road, Suite 9
Madison, CT 06443-2662
P: (203) 453-2777