JIS G 1258-4:2007
Iron and steel -- ICP atomic emission spectrometric method -- Part 4: Determination of niobium content -- Dissolution in phosphoric and sulfuric acids or Dissolution in acids and fusion with potassium disulfate

Standard No.

JIS G 1258-4:2007

Release Date

2007

Published By

Japanese Industrial Standards Committee (JISC)

Latest

JIS G 1258-4:2007

Scope

This standard specifies the sulfuric acid phosphoric acid decomposition method and the acid decomposition/potassium disulfate melting method among methods for quantifying the niobium content in iron and steel by ICP emission spectrometry. All of these methods are applicable to the determination of niobium content (mass fraction) of 0.001% to 2.5%.

JIS G 1258-4:2007 Referenced Document

• JIS G 1258-0 Iron and steel -- ICP atomic emission spectrometric method -- Part 0: General rules
• JIS Z 8402-6 Accuracy (trueness and precision) of measurement methods and results -- Part 6: Use in practice of accuracy values

JIS G 1258-4:2007 history

• 2007 JIS G 1258-4:2007 Iron and steel -- ICP atomic emission spectrometric method -- Part 4: Determination of niobium content -- Dissolution in phosphoric and sulfuric acids or Dissolution in acids and fusion with potassium disulfate