GB/T 223.59-1987 Methods for chemical analysis of iron,steel and alloy--The reduced molybdoantimonyl phosphoric acid photometric method for the determination of phosphorus content
This standard is applicable to the determination of phosphorus content in iron powder, carbon steel, alloy steel and high alloy steel, but not applicable to niobium-containing and tungsten steel. Measuring range: 0.01 to 0.06%. This standard complies with GB1467-78 "General Rules and General Provisions of Standards for Chemical Analysis Methods of Metallurgical Products".
GB/T 223.59-1987 history
2008GB/T 223.59-2008 Iron,steel and alloy.Determination of phosphorus content.Bismuth phosphomolybdate blue spectrophotometic method and antimony phosphomolybdate blue spectruophotometric method
1987GB/T 223.59-1987 Methods for chemical analysis of iron,steel and alloy--The reduced molybdoantimonyl phosphoric acid photometric method for the determination of phosphorus content