Heat Resistant Tungsten Wire for Electron-Tube Heater
1.Style:tungsten wire
2. Shape: coil
3. Grade: W1
4. Application: Properties & ApplicationGood winding property,non-sag,applied for making incandescent lamp,coiled-coil or trispiral CFL filament,feast lamp and support.Good processability,applied for halogen lamp and coiled-coil incandescent lamp.High recrystallization temperatures and non-sag,applied for making shock-resistance filament and halgen filament.
5. Chemical Composition(%): W K Fe Moother impurity,each ≥99.95 0.004-0.010≤0.0020 ≤0.0030 ≤0.0010
6. Diameter Tolerance: diameterweight mg/200mm200mm weight tolerancediameter tolerance 0 grade I grade II grade I gradeII 10 0.30-0.98- ±3.0 ±4.0 18 0.98-4.85± 2.0 ±2.5 ±3.0 40 4.85-19.39 ±1.5 ±2.0 ±2.580 19.39-272.71 ±1.0±1.5 ±2.0 300272.71-371.19 -±1.0 ±1.5 350 - - - ±1.5±2.0 500 -- - ±1.0±1.5