『 Tungsten Rod 』 ◆ Type & Applicatioon： Type Application WB584 WB150 WB001 Applied for manufacturing non-sag tungsten wire,setting rod at H.t.,cathodes,electrode,heater element,etc W2 Applied for making lead,support,electrode,electrode. ◆ Chemical Composition(%)： W Fe Mo other impurities ≥99.95 ≤0.002 ≤0.003 ≤0.001 Note:K is not regarded as impurity. ◆ Diameter Range： CLASS IFICATION minimal diameter maximal diameter TUNGSTEN ROD swaged 3.0 16.0 straightened 0.40 3.0 GROUND TUNGSTEN ROD 1.0 14.0 ◆ Diameter Tolerance： Diameter Black tungsten rod Ground tungsten rod diameter tolerance roundness diameter tolerance roundness 0.40<d≤0.80 ±2 2 - - 0.80<d≤3.0 ±2 2 ±0.03 0.03 3.0<d≤6.5 ±2 2 ±0.05 0.05 6.5<d≤14 ±2 2 ±0.08 0.08