Pure Tungsten Wire

1、Product feature

Caiyang brand doped tungsten wires are manufactured by the high tech of doping, acid washing, isostatic pressing, PLC controlled direct-sintering, swaging and auto feeding, The products are featured with minimum deformation at high temperatures, high recrystallization temperatures, uniformity in dimension and excellent coilability. For tungsten rod weighing 3kg.pc, its rough welding tungsten wire weighing 5kg/pc, this technology lakes lead in China, Customers are allowed to choose various types of tungsten wire in accordance with their specific applications.

2、Diameter Tolerance

Diameter μm	Weight mg/200mm	200mm weight tolerance%			Diameter tolerance%
Diameter μm	Weight mg/200mm	0	Ⅰ	Ⅱ	Diameter tolerance%
6<d<18	0.12-0.98	--	±3	±4	Ⅰ
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	>272.71-371.19		±1.0	±1.5
350<d<500					±1.5	±2.0
500<d<1800					±1.0	±1.5

3、Type & Application

Type	Applications
W91	Applied for making filament, shock-resistance filament and other high-temperature-resistance devices.
W71	Applied for making auto lamp filament and other anti-shock devices.
W61	Applied for making coiled-coil filament.
W31	Applied for making coiled-coil or tri-spiral CFL filament, incandescent filament and support.
W41	Applied for making stranded tungsten wire, tungsten heater element.
W42	Applied for making stranded tungsten wire, tungsten heater element and other no special temperature required devices.
W11	Applied for making electrode and lead.

4、Chemical Composition

W	Fe	Mo	Other Elements
≥99.95%	≤0.0020%	≤0.0030%	≤0.0010%

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