97W-2.1Ni-0.9Fe tungsten alloy ball is of very nice quality and it is very durable product. It can be used in many fields, such as the projectile missile weapons, armor-piercing and hunting devices, shotguns, prefabricated fragments, missile weapons, ammunition penetrator balance.
The properties of 97W-2.1Ni-0.9Fe tungsten alloy ball 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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