90W-6Ni-4Cu tungsten alloy ball has high hardness and wear resistant qualities along with the ability to withstand shock and wear resistance. It is used where extreme hardness and wear resistance is required in such applications as ballizing, bearings, ball screws, valves and flowmeters.
The properties of 90W-6Ni-4Cu tungsten alloy ball are:
Alloy Type：W 90%、Ni 6%、Cu 4%
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: 24 C
Ultimate Tensile Strength Min: 110,000 ksi
Yield Strength Min (0.2% offset): 80,000 ksi
Elongation: 6 % in 1"
Proportional Elastic Limit: 45,000PSI
Modules of Elasticity: 40 x 106 PSI
Coefficient of Thermal Expansion: 5.4 X 10-6/°C (20~400°C)
Thermal Conductivity: 0.23 CGS Units
Electrical Conductivity: 14 % IACS
Magnetic Properties: NIL
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