This method specifies the cinchonine gravimetric method for the determination of the amount of tungsten. This method is suitable for the determination of tungsten content in alloy steel, high temperature alloy and precision alloy. Measuring range: 1.00% to 22.00%.
GB/T 223.43-1994 history
2008GB/T 223.43-2008 Iron,steel and alloy.Determination of tungsten content.Gravimetric method and spectrophotometric method
1994GB/T 223.43-1994 Methods for chemical analysis of iron, steel and alloy. Determination of tungsten content
1985GB 223.43-1985 Methods for chemical analysis of iron,steel and alloy--The cinchonine gravimetric method for the determination of tungsten content