Ⅰ,Physical and chemical properties

1  Tungsten heater

1.1  Purity:W≥99.95%;

1.2  Density:≥19.1g/cm3;

1.3  Application temperature environment:≤2400°C;

1.4 Vapor Pressure:10-6 Pa at 2100°C

1.5 Thermal Expansion Coefficient:(0—1600°C):4.98×10-6

1.6 The Electrical Resistivities at different Temperatures(Ωmm2 /m)

Tungsten heater