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This Standard specifies, among the nickel determination methods for iron and steel, the dimethylglyoxime spectrophotometric methods.

This method is applicable to nickel contents (mass fraction) from 0.01 % to 5.0 %.

However, the iron hydroxide precipitation separation (8.2) is not applicable if the aliquot of the test solution contains 2 mg or more of manganese and 0.3 mg or more of cobalt. Further, the citric acid masking method (8.3) is not applicable to samples with a manganese content (mass fraction) of 5 % or more.

NOTE 1 Table 1 shows the applicable determination ranges of standards in JIS G 1216 series.

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

ISO 4939 : 2016 Steel - Determination of nickel - Dimethylglyoxime spectrophotometric method (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.