Fadaka tungsten alloys ni laarin 15-70% fadaka.Wọn jẹ lilo ni akọkọ fun awọn olubasọrọ itanna — awọn ohun elo ti o wuwo ni gbogbogbo labẹ lọwọlọwọ giga,
gẹgẹ bi awọn olubasọrọ gbigbe fun Circuit-breakers laarin 100 ati 800 A, aiye jijo breakers, gbigbe olubasọrọ fun air Circuit fifọ laarin 1000 ati 10000 A, thermostats, kekere Circuit breakers, arcing olubasọrọ fun o tobi iwọn contactors, m-case breakers ati eru eru. -fifuye AC / DC contactors, ati be be lo.