HB 7064.4-1994
Metal heat treatment salt bath chemical analysis method barium sulfate turbidimetric method for determination of sulfate radical content (English Version)

Standard No.

HB 7064.4-1994

Language

Chinese, Available in English version

Release Date

1994

Published By

Professional Standard - Aviation

Latest

HB 7064.4-1994

Scope

This standard specifies the method principle, reagents, instruments, analysis steps, calculation and tolerance of analysis results for the determination of sulfate content in metal heat treatment baths. This standard is applicable to the determination of sulfate content in nitrate bath (potassium nitrate-sodium nitrate) for metal heat treatment. Measuring range: 0.05% ~ 0.25%.

HB 7064.4-1994 history

• 1994 HB 7064.4-1994 Metal heat treatment salt bath chemical analysis method barium sulfate turbidimetric method for determination of sulfate radical content