💖Tungsten is a metallic element. The chemical element symbol of tungsten is W, atomic number is 74, relative atomic mass is 183.85, atomic radius is 137 picommeters, density is 19.35 grams/per cubic centimeter, tungsten melting point :3410±20℃ boiling point :5927℃(at a standard atmospheric pressure) belongs to the sixth cycle of the periodic table (the second longest period) of the VIB group. Steel gray or silver white, high hardness, high melting point, at room temperature is not eroded by air; The main use is to manufacture filament and high-speed cutting alloy steel, super hard mold, also used in optical instruments, chemical instruments.
💖Product Attributes: Solid density :19.35 g/cm ³. Liquid density :17.6 g/cm ³. Specific heat :130J/kg.K(300K). Thermal conductivity :160W/m.K(300K). Melting point :3410±20℃; Boiling point :5927℃(at a standard atmospheric pressure); Mohs hardness :7.5; Latent heat of melting :40.13±6.67kJ/mol; Shenghua heat :847.8 kJ/mol(25℃); Heat of evaporation:823.85±20.9kJ/mol(boiling point); Resistance temperature coefficient :0.004821C; Electron escape work :4.55eV; Thermal neutron capture surface :19.2b; Elastic modulus: 35,000-38,000 MPa(wire); Torsion modulus :~36000Mpa; Volume modulus :3.108x1011-1.579x107t+0.344x103t2a; Shear modulus :4.103x1011-3.489x107t+7.55x103t2a; Compressibility :2.910-7 cm/kg