GB/T 223.5-1997 Methods for chemical analysis of iron, steel and alloy. The reduced molybdosilicate spectrophotometric method for the determination of acid-soluble silicon content (English Version)
This standard specifies the photometric method for the determination of acid-soluble silicon content by reducing molybdosilicate. This standard applies to the determination of 0.030% (m/m) to 1.00% (m/m) acid-soluble silicon content in iron, carbon steel and low alloy steel.
GB/T 223.5-1997 history
2008GB/T 223.5-2008 Steel and iron.Determination of acid-soluble silicon and total silicon content.Reduced molybdosilicate spectrophotometric method
1997GB/T 223.5-1997 Methods for chemical analysis of iron, steel and alloy. The reduced molybdosilicate spectrophotometric method for the determination of acid-soluble silicon content