ASTM B777-15 class4 tungsten alloy brick has high density, high melting point, good thermal conductivity, good electrical conductivity and low coefficient of linear expansion. Its thermal conductivity is 5 times that of die steel, and its coefficient of linear expansion is only 1/2~1/3 of iron or steel. In addition, it is also resistant to electric corrosion and high pressure, which mainly used in electronics, lighting, vacuum coating, medical equipment.
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The properties of ASTM B777-15 class4 tungsten alloy brick are:
Matrix: 97% W
Density: 18.25~18.85g/cc
Hardness Rockwell Max: 35HRC
Standard Alloy
Ultimate Tensile Strength: 100 KSI and 689 MPa
Yield Strength (0.2% offset): 75 KSI and 517 MPa
Elongation: 2%
Nonmagnetic Alloy
Ultimate Tensile Strength: NA
Yield Strength (0.2% offset): NA
Elongation: NA
