GB/T 223.13-2000 Methods for chemical analysis of iron,steel and alloy The ammonium ferrous sulfate titration method for the determination of vanadium content (English Version)
This standard specifies the method for the determination of vanadium content by ferrous ammonium sulfate titration. This standard applies to the determination of 0.100% (m/m) to 3.50% (m/m) vanadium content in steel and alloys. This standard does not apply to samples containing more than 20% (m/m) of cobalt, more than 0.01% (m/m) of cerium and more than 20% (m/m) of chromium and more than 20% (m/m) of manganese m) or determination of vanadium content in samples containing more than 18% (m/m) of tungsten and less than 0.4% (m/m) of vanadium
GB/T 223.13-2000 history
2000GB/T 223.13-2000 Methods for chemical analysis of iron,steel and alloy The ammonium ferrous sulfate titration method for the determination of vanadium content