Copper-Tungsten

Class 11

Class 11 Copper Tungsten contains 25% copper and 75% tungsten. Like Class 10, it has superior wear resistance and strength and good thermal and electrical conductivity. However, it is harder than Class 10 and used in applications that require moderate pressure. Common uses include projection welding electrodes, flash and butt welding electrodes, light upsetting and seam welding bushings, and spot welding low conductivity steels. It is also widely used in chip carriers, substrates, flanges, and frames for power semiconductor devices.

CDA No. C74400

Applications for Copper Tungsten

RESISTANCE WELDING
HEAT SINKS
ELECTRICAL DISCHARGE MACHINING
ELECTRO-CHEMICAL MACHINING
ELECTRICAL CONTACTS

COPPER TUNGSTEN CLASS 11 (10W3)

Class 11 (a harder material than Class 10) is recommended as facing inserts for flash and butt welding dies and general purpose projection welding electrodes. It may also be used as seam welder bearing inserts and facing for electro-forming or electro-forging, such as stainless steel.