This standard specifies the determination of acid-soluble aluminum content by chrome azure S photometric method. This standard applies to the determination of 0.050% (m/m) to 1.00% (m/m) aluminum content in steel and alloys.
GB/T 223.9-2000 history
2019GB/T 223.89-2019 Iron, steel and alloy—Determination of tellurium content—Hydride generation-atomic fluorescence spectrometric method
2008GB/T 223.29-2008 Iron,steel and alloy.Determination of lead content.Carrier precipitation-xylenol orange spectrophotometric method
1997GB/T 223.69-1997 Methods for chemical analysis of iron, steel and alloy. The gas-volumetric method after combustion in the pipe furnace for the determination of carbon content
1994GB/T 223.49-1994 Methods for chemical analysis of iron,steel and alloy. Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare tarth content
1989GB/T 223.19-1989 Methods for chemical analysis of iron,steel and alloy--The neocuproine-chloroform extraction photometric method for the determination of copper content
1984GB/T 223.29-1984 Methods for chemical analysis of iron,steel and alloy--The xylenol orange photometric method for determination of lead content after carrier precipitation