GB/T 223.40-2007
ActiveIron, steel and alloy - Determination of niobium content - The sulphochlorophenol S spectrophotometric method
钢铁及合金 铌含量的测定 氯磺酚S分光光度法
Application Summary AI generated
This standard specifies the sulphochlorophenol S spectrophotometric method for determining niobium content in iron, steel, and alloys. It is applied in metallurgical laboratories and quality control settings for analyzing niobium concentrations in ferrous materials, particularly when high accuracy is needed for alloy composition verification or production monitoring. The method is suitable for niobium content ranges typically found in low-alloy steels and certain nickel-based alloys.
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