Tungsten Carbide Valve Ball

tungsten carbide valve ball

Description

Tungsten carbide valve ball are the material composite by tungsten carbide add with Co or Ni, with high rigidity, no significant plastic deformation and small thermal expansion coefficient in the normal temperature. The valve ball with size stability and high precision.

Features

With high wear resistance, high corrosion, small thermal expansion coefficient, high stability and high precision.

Application

Tungsten carbide valve ball is widely used in many military and civilian high-tech fields rolling the ball bearing industry, fluid sealing rotating ball, valve core, oil extraction machine-way valve, valve seat and so on.

Specifications

The smalles size of tungsten carbide valve blank ball is Ø2mm, the finisehd ball is Ø1mm. Size tolerancs of blank ball is ±0.2mm, the surface of finished ball is G25. But also accept customized.

American Standard Grinding Grades and Tolerance Standard

Grade Roundness Diameter Tolerances Maximum Surface Roughness
G3 0.000003" +/- .00003" 0.5
G5 0.000005" +/- .00005" 0.8
G10 0.000010" +/- .0001" 1.0
G25 0.000025" +/- .0001" 2.0
G50 0.000050" +/- .0002" 3.0
G100 0.0001" +/- .0005" 5.0
G200 0.0002" +/- .0010" 8.0

General Grade and Properties

Grade Composition(%) Physical Properties
TC Co Ni Density(g/cm³) Hardness(HRA) T.R.S.(N/mm²)
YG6 Balance 6  / 14.6-15.0 91 1600
YG8 Balance 8  / 14.4-14.8 89 1800
YG6X Balance 6  / 14.6-15.0 92 1450
YN6 Balance  / 6 14.5-14.9 90 1450
YN8 Balance  / 8 14.4-14.8 88 1650
YN12 Balance  / 12 14.0-14.4 86 1800

More information about other grades, plesae visit:Traditional Grade

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