GB/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
This standard specifies the determination of carbon content by the gas volumetric method after combustion in a tube furnace. This standard applies to the determination of 0.10% (m/m) to 2.00% (m/m) carbon content in iron, steel, superalloys and precision alloys.
GB/T 223.69-1997 history
2008GB/T 223.69-2008 Iron,steel and alloy.Determination of carbon contents.Gas-volumetric method after combustion in the pipe furnace
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