97W-2.1Ni-0.9Fe tungsten alloy block is nicely finished and used nice grade of tungsten as a raw material therefore it is highly demanding. It is now widely used in manufacturing parts concerning medical field, such as radiation shielding wall, block for CT facility, etc.
The properties of 97W-2.1Ni-0.9Fe tungsten alloy block are:
Alloy Type（%）：97W、2.1Ni、0.9Fe
MIL-T-21014: Class 4
SAE-AMS-T-21014: Class 4
AMS 7725 C: NIL
ASTM B777-87: Class 4
Density: 18.5 g/cc and 0.668 lbs/ in3
Hardness Rockwell: 28 C
Ultimate Tensile Strength Min: 123,000 ksi
Yield Strength Min (0.2% offset): 85,000 ksi
Elongation: 5 % in 1"
Proportional Elastic Limit: 45,000PSI
Modules of Elasticity: 53 x 106 PSI
Coefficient of Thermal Expansion: 4.5 X 10-6/°C (20~400°C)
Thermal Conductivity: 0.3 CGS Units
Electrical Conductivity: 17 % IACS
Magnetic Properties: Slightly Magnetic
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