www.fotmacarbide.com provide 99.95% Pure Customized Tungsten Products Tungsten Stranded Wire Heating Elements Specification of Tungsten Stranded Wire: 1. Purity: 99.95% 2. Density: 19.3g/cm3 3. Type: W3101, W3102, W34, W1, W2 4. Content: W3 W34 W2: Wâ?¥ 99.95% 5. Character and usage W3101: Twist wire; It has good character in high temperature and endurance. Second crystal temperatureâ?¥ 1950�º C, mainly used as filament wire in halogen filament, high temperature color filament, twist filament, white filament and fluorescence filament. W3102: It has good character in roll and high temperature. Second crystal temperatureâ?¥ 1850�º C, mainly used in white filament wire, vacuum tube heating wire. W34: Used in twist wire. W1 W2: Used as frame of vacuum tube, heating elements. 6. Super thin white tungsten wire. Spaces: 3-14um