This standard applies to the determination of the amount of silicon in aluminum and iron. Measuring range: less than 2.50%.
GB/T 5059.5-1986 history
2014GB/T 5059.5-2014 Ferromolybdenum.Determination of silicon content.Sulphuric acid dehydration gravimetric method and molybdenum blue spectrophotometric method
1986GB/T 5059.5-1986 Methods for chemical analysis of ferromolybdenum--The gravimetric method for the determination of silicon content