All Kind of Shapes Twist Tungsten spiral Wire for vacuum Coating

Min.Order: 1

Product origin: Luoyang, Henan, China

Infringement complaint:

Complaint

US$ -1

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
Designation	Tungsten 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(%)
Diameter (μm)	Weight (mg/200mm)	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	-