90W-7Ni-3Fe tungsten alloy bar has much higher thermal conductivity with much smaller thermal expansion coefficient. It can be used as medical facilities, to heat elements of high temperature furnaces, and obstruction of radiation and interference.
The properties of 90W-7Ni-3Fe tungsten alloy bar are:
Alloy Type：W 90%、Ni 7%、Cu 3%
MIL-T-21014: Class 1
SAE-AMS-T-21014: Class 1
AMS 7725 C: 7725 C
ASTM B777-87: Class 1
Density: 17.1 g/cc and 0.614 lbs/ in3
Hardness Rockwell: 25 C
Ultimate Tensile Strength Min: 120,000 ksi
Yield Strength Min (0.2% offset): 88,000 ksi
Elongation: 10 % in 1"
Proportional Elastic Limit: 52,000PSI
Modules of Elasticity: 45 x 106 PSI
Coefficient of Thermal Expansion: 4.61 X 10-6/°C (20~400°C)
Thermal Conductivity: 0.18 CGS Units
Electrical Conductivity: 10 % IACS
Magnetic Properties: Slightly Magnetic
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