90W-7Ni-3Fe tungsten alloy ball has incredible strength, consistent durability and long-lasting value. It is especially used in precision instrument fields, such as mobile phone vibrator, clock cube, self-winding watches, anti-vibration toll holders, flywheel weights and more.
The properties of 90W-7Ni-3Fe tungsten alloy ball 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
More details, please visit:
http://www.tungsten-alloy.com/tungsten-alloy-ball.html
