Tungsten Wire Baskets

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A wide selection of single and multiple strand wire baskets for EM and thin film applications. The tungsten boats, baskets and filaments are manufactured from high grade tungsten. Of all metals pure form, tungsten has the highest melting point (3422°C / 6192°F), the lowest vapor pressure at temperatures above 1650°C (3000°F) and has the highest tensile strength. Tungsten also has the lowest coefficient of thermal expansion of any pure metal. This combination of properties makes tungsten the ideal material for evaporation sources. During evaporation, it can alloy with some materials such as Al or Au. In this case, another evaporation source material should be used such as alumina coated boats or baskets. Other materials useful for evaporation sources are molybdenum and tantalum. Please see the Deposition Techniques Table for extensive information on vacuum deposition and suitability of evaporation sources. We also offer a wide range of evaporation materials. Single Strand Tungsten Wire Baskets Single strand, thin tungsten wire (0.5-0.75mm) baskets designed for small power supplies rated at 30-50A as commonly used in EM coating system. Suitable for thin films only. Prod. No. Turns I.D.(mm) Height(mm) Overall Length(mm) Wire dia.(mm)/(inches) 72-1 9 4 8 72 0.50 / 0.02 73-1 8 9 13 82 0.75 / 0.03 74-1 9 4 7 80 0.50 / 0.02 75-1 8 7 9 100 0.50 / 0.02 76-1 0.030" (0.76mm) wire diameter, 5 coils, 1-7/8" L (47.6mm) , 1/2" (12.7mm) basket height, 3/16" (4.8mm) inside coil diameter.Settings: 2.48V/23A/57W for 1800°C 76-2 0.030" (0.76mm) wire diameter, 4 coils, 1-7/8" L (47.6mm) , 5/8" (15.9mm) basket height, 1/4" (6.35mm) inside coil diameter.Settings: 2.90V/23A/67W for 1800°C 76-3 Single strand wire basket, 0.030" (0.76mm) wire diameter, 5 coils, 1-7/8" L (47.6mm) , 3/4" (19mm) basket height, 1/4" (6.35mm) inside coil diameter.Settings: 3.77V/23A/87W for 1800°C 76-13 3 x 0.025" (0.635mm) wire diameter, 5 coils, 1-7/8" L (47.6mm) , 1/2" (12.7mm) basket height, 3/16" (4.8mm) inside coil diameter.Settings: 2.30V/23A/90W for 1800°C 76-23 3 x 0.025" (0.635mm) wire diameter, 4 coils, 1-7/8" L (47.6mm) , 5/8" (15.9mm) basket height, 1/4" (6.35mm) inside coil diameter.Settings: 2.66V/42A/112W for 1800°C 76-33 3 x 0.025" (0.635mm) wire diameter, 5 coils, 1-7/8" L (47.6mm) , 3/4" (19mm) basket height, 1/4" (6.35mm) inside coil diameter.Settings: 3.54V/43A/152W for 1800°C Show more