рений провод вольфрама

WR31 (W-3Re) Ithas a special non-sag property and many applications:heaters for various electronic tubes orsmall lamps. It also is the ideal material for probe pin because of its hardness. WR30 and WR250 (W-3Re and W-25Re) They are used as thermal couple wire, WR30 as positive lead wire; WR250 as negative lead wire; WR50 and WR260 (W-5Re and W-26Re) They are used as thermal couple wire, WR50 as positive lead wire; WR260 as negative lead wire; WR200, WR250 and WR260 (W-20Re, W-25Re and W-26Re) They are all used as tie in the process of sapphire substrate producing.