90WNiFe tungsten alloy ball provides a unique combination of density, mechanical strength, machinability, corrosion resistance, and economy. It is applied in some areas of precision instruments, such as mobile phone vibrators, the clock counter weight, weight watch parts, mobile phone vibrator, flywheel weight, etc.
The properties of 90WNiFe tungsten alloy ball are:
Matrix: 90% W
Binder: 10% Ni-Fe
Density: 17.0g/cm3 and 0.614lb/in3
Thermal Conductivity: 70 W/(m·K)
Coefficient of Thermal Expansion 20~100℃：6.1μm/(m·K)
Coefficient of Thermal Expansion 20~300℃：6.2μm/(m·K)
Coefficient of Thermal Expansion 20~4500℃：6.3μm/(m·K)
Electrical Conductivity: 11% IACS
Electrical Resist：0.15~0.17μΩ·m
Yield Strength (0.2% offset): 75.4~85.6KSI
Tensile Strength: 110~125 KSI
Elongation: 8~17%
Hardness：285~330HV10
Modulus of Elasticity：310~360GPa
Magnetic Properties: Slightly Magnetic
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