scope:

This Standard specifies an infrared absorption method after fusion under inert gas for the determination of oxygen in iron and steel. This method is applicable to mass fraction of oxygen 0.0005 % or over up to and including 0.05 %.

NOTE 1 Since the determination method specified in this Standard includes in its determination value the content of oxygen combined with or adsorbed on the sample surface, if used for determination made on micro region, it may indicate a higher value than the actual oxygen content in the sample.

NOTE 2 The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 17053: 2005 Steel and iron-Determination of oxygen-Infrared method after fusion under inert gas (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/ IEC Guide 21-1.