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Current Position: Home >> Products >> Tungsten Products >> Wires
Applications:
  • For producing electric light source parts and electric vaccum components
  • For producing heating elements and refractory parts in high temperature furnaces
  • For producing heating elements used in vaccum metalizing or plating
Appearance:  W-wire is regular black covered with graphite. After graphite is removed it is metallic luster.
Chemical Composition:
Designation Tungsten Content Impurity Elements Content
Total Each
WAL1, WAL2 ≥99.95% ≤0.05% ≤0.01%
W1 ≥99.95% ≤0.05% ≤0.01%
W2 ≥99.92% ≤0.08% ≤0.01%
Note: Potassium is not counted in impurities content.
Diameter tolerance(%):
Diameter (μm) Weight (mg/200mm) Weight(mg/200mm) Tolerance(%) Diameter Tolerance(%)
Grade 0 Grade 1 Grade 2 Grade 0 Grade 1 Grade 2
5≤d≤12 0.075~0.44 ±4 ±5
12<d≤18 >0.44~0.98 ±3 ±4
18<d≤40 >0.98~4.85 ±2 ±2.5 ±3
40<d≤80 >4.85~19.39 ±1.5 ±2.0 ±2.5
80<d≤300 >19.39~272.71 ±1.0 ±1.5 ±2.0
300<d≤350 >272.71~371.79 ±1.0 ±1.5
350<d≤500 ±1.5 ±2.0 ±2.5
500<d≤1800 ±1.0 ±1.5 ±2.0


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