GB/T 5686.4-2008: Ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal -- Determination of phosphorus content -- Molybdenum blue photometric method and alkali content titrimetric method

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Scope

This Part specifies the determination of phosphorus content in ferromanganese,
ferromanganese-silicon, nitrogen-bearing ferromanganese, manganese metal
and electrolytic manganese by the molybdenum blue photometric method and
the alkali content titrimetric method.
This Part applies to the determination of phosphorus content in
ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese,
manganese metal. The determination range (mass fraction): 0.0030% ~
0.650%. Method I: molybdenum blue photometric method, applicable to the
determination of silicon content in ferromanganese, ferromanganese-silicon,
nitrogen-bearing ferromanganese, manganese metal, determination range
(mass fraction): 0.003 0% ~ 0.450%; method II: alkali content titrimetric method,
applicable to the determination of ferromanganese, determination range (mass
fraction): 0.080% ~ 0.650%.

Basic Data

Standard ID	GB/T 5686.4-2008 (GB/T5686.4-2008)
Description (Translated English)	Ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal -- Determination of phosphorus content -- Molybdenum blue photometric method and alkali content titrimetric method
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H11
Classification of International Standard	77.100
Word Count Estimation	9,920
Date of Issue	2008-05-13
Date of Implementation	2008-11-01
Older Standard (superseded by this standard)	GB/T 5686.4-1988; GB/T 7730.3-1997; GB/T 8654.5-1988
Quoted Standard	GB/T 4010
Regulation (derived from)	National Standard Approval Announcement 2008 No.8 (Total No.121)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the determination of manganese and molybdenum blue spectrophotometry alkalimetry, Manganese and manganese content of phosphorus, manganese alloys, nitrided ferromanganese. This section applies to ferromanganese, manganese alloys, nitrided ferromanganese, determination of phosphorus content of manganese metal. Measuring range (mass fraction): 0. 0030%-0. 650%. Method One: Molybdenum blue spectrophotometric method. Suitable for ferromanganese, determination of silicon manganese metal content, manganese silicon alloy, ferromanganese nitride. Measuring range (mass fraction)