Characteristic and Application of Material Kind

GRADE	COMPOSITION%	DENSITYg/Cm3	ELECTRICAL CONDUCTIVITY IACS %	HARDNESS( HRB)	APPLICATION
Copper Tungsten	Cu20±3W80±3 Cu25±3W75±3 Cu30±3W70±3 Cu35±3W65±3 Cu40±3W60±3	15.1~15.7 14.3~15.1 13.7~14.5 13.2~14 12.8~13.7	32~42 37~47 43~53 45~55 47~57	95~105 90~100 85~95 80~90 78~90	Extra-high voltage breaker, ARC TIP, GCB, OCB, GLBS, ASS, ARD contact of ACB, and ATS. Contact of the tap conversion transformer, starter contact for automobiles, electrode spot welding tips for discharging process.
Silver Tungten	Ag20±3W80±3 Ag30±3W70±3 Ag35±3W65±3 Ag40±3W60±3 Ag50±3W50±3	16.2~16.9 14.7~15.7 14.3~15.1 13.7~14.5 12.9~13.7	35~45 45~55 48~58 50~60 55~65	90~105 85~95 80~90 75~85 65~75	Current breakers, contact of air circuit breakers, breaker of motor cars, ACB, NFB, electrode spot welding tips for discharging process of ELB contact
Silver Carbon	Ag95±2Gr 3±1±a2 Ag90±2Gr 5±1±a5 Ag85±2Gr 7±1±a8 Ag75±3Gr20±1±a5	7.5~9.5 7.0~8.0 5.5~6.5 4.7~5.7	전기비저항 μ Ω-cm 2~13 5~20 10~20 20~40	HS 5~15 10~20 15~30 20~35	Contact point for communication devices, DC relay, contact point for railroad signal, vessel slip ring brush, and brush for tacho-generator
Copper Carbon	Cu95±2Gr 3±1±a2 Cu90±2Gr 5±1±a5 Cu85±2Gr 5±1±a10 Cu80±3Gr10±1±a10	6.8~7.8 6~7 5.5~7 5~6	3~15 5~20 10~30 20~40	4~14 10~20 15~30 20~40	Carbon for current collection, aging brushes, current collector for subway, brushes for grounding

Name	Characteristic and Application of Material Kind
Series	Products

Youngjin Metal