GB/T 223.38-1985 Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-gravimetric method for the determination of niobium content (English Version)
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GB/T 223.38-1985
Scope
This standard is applicable to the determination of niobium content in alloy steel, high temperature alloy and precision alloy. Measuring range: above 1.00%. This standard complies with GB1467-78 "General Rules and General Provisions of Standards for Chemical Analysis Methods of Metallurgical Products".
GB/T 223.38-1985 history
1985GB/T 223.38-1985 Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-gravimetric method for the determination of niobium content