GB/T 5686.2-2022: Ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal - Determination of silicon content - Molybdenum blue spectrophotometric method, silicon potassium fluoride titrimetric method and perchloric acid dehydration gravimetric method

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Scope

This document specifies the determination of silicon content in ferromanganese,
ferromanganese-silicon, micro-low carbon ferromanganese-silicon, nitrogen-bearing
ferromanganese and manganese metal, using molybdenum blue spectrophotometric method,
silicon potassium fluoride titrimetric method and perchloric acid dehydration gravimetric
method.
This document is applicable to the determination of silicon content in ferromanganese,
ferromanganese-silicon, micro-low carbon ferromanganese-silicon, nitrogen-bearing
ferromanganese and manganese metal. The determination range (mass fraction) is 0.10% ~
40.00%. Method 1: molybdenum blue spectrophotometric method, which is applicable to the
determination of silicon content in manganese metal, with a determination range (mass fraction)
of 0.10% ~ 2.00%; Method 2: silicon potassium fluoride titrimetric method, which is applicable
to the determination of silicon content in ferromanganese-silicon and micro-low carbon
ferromanganese-silicon, with a determination range (mass fraction) of 12.00% ~ 40.00%;
Method 3: perchloric acid dehydration gravimetric method, which is applicable to the
determination of silicon content in ferromanganese, ferromanganese-silicon, micro-low carbon
ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal, with a
determination range (mass fraction) of 0.50% ~ 40.00%.

Basic Data

Standard ID	GB/T 5686.2-2022 (GB/T5686.2-2022)
Description (Translated English)	Ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal - Determination of silicon content - Molybdenum blue spectrophotometric method, silicon potassium fluoride titrimetric method and perchloric acid dehydration gravi
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H11
Classification of International Standard	77.100
Word Count Estimation	14,179
Date of Issue	2022-10-14
Date of Implementation	2023-02-01
Older Standard (superseded by this standard)	GB/T 5686.2-2008
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration