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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% | |||
| 0 | Ⅰ | Ⅱ | ||||
| 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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