Good Propersity Black Tungsten Wire Dia0.28

• Application: Electronics, Industrial, Chemical
• Standard: GB, ASTM
• Purity: >99.95%
• Alloy: Non-alloy
• Shape: Wire
• Type: Tungsten Wire
• Model NO.: dia0.28
• Surface: Black
• Usage: Light or EDM or spiral
• Transport Package: Wooden Box or Wooden Box for Export Packing
• Specification: dia0.28mm
• Trademark: TC
• Origin: China
• HS Code: 8101960000
• Production Capacity: 5tons/Month

Product Description

Tungsten wire

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	-