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Products > Tungsten Filament > > tungsten wire for lamp filaments
Product name : tungsten wire for lamp filaments
Product No. : 2017425144143
Purity : 
Size : 
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  Details:
Product feature

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.

Diameter Tolerance

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

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.

Chemical Composition

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

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