GB/T 223.3-1988 Methods for chemical analysis of iron, steel and alloy--The diantipyrylmethane phosphomolybdate gravimetric method for the determination of phosphorus content (English Version)
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 223.3-1988
Replace
GB 223.3-1981
Scope
This standard is applicable to the determination of phosphorus content in pig iron, iron powder, carbon steel, alloy steel and superalloy. Measuring range: 0.01% to 0.80%. This standard complies with GB 1467-78 "General Rules and General Provisions of Standards for Chemical Analysis Methods of Metallurgical Products".
GB/T 223.3-1988 history
1988GB/T 223.3-1988 Methods for chemical analysis of iron, steel and alloy--The diantipyrylmethane phosphomolybdate gravimetric method for the determination of phosphorus content
1981GB/T 223.3-1981 Determination of phosphorus content in steel and alloy