This standard specifies the method for determining the amount of thorium dioxide in tungsten-thorium alloys. This standard is applicable to the determination of thorium dioxide content in tungsten-thorium alloys. Measuring range: 0.5%~5.0%.
YS/T 501-2013 history
2013YS/T 501-2013 Determination of thorium dioxide content in thorium-tungsten alloys.Gravimetric method
2006YS/T 501-2006 Gravimetric method for determination of thorium dioxide in tungsten-thorium alloy