This standard specifies the technical requirements, test methods, inspection rules, packaging, storage, transportation, marking and quality certificate of manganese silicon alloy. This standard is applicable to manganese silicon alloy used as alloying agent, composite deoxidizer and desulfurizer in steelmaking and casting, and as reducing agent in smelting medium and low carbon ferromanganese. GB/T 4008-1996 Manganese silicon alloy GB/T4008-1996 standard download decompression password: www.bzxz.net

GB/T 4008
The original national standard (G134008-87 Ferromanganese-silicon) has too many grades, some of which are not produced. The main elements of the original standard are not connected between the grades, and no series are formed, which makes it difficult to organize production and grade judgment. This revision deletes some grades and adds individual grades. The main element content of each grade and the parameters of individual grades are reasonably adjusted without affecting the use. This standard was first issued in 1983 and revised for the first time in 1987. From the date of implementation of this standard, it replaces GB34008-87. This standard is proposed by the Ministry of Metallurgical Industry of the People's Republic of China and is under the jurisdiction of the Information Standards Research Institute of the Ministry of Metallurgical Industry. This standard was drafted by Shanghai Chongzhu Iron and Steel Co., Ltd. The main drafters of this standard are: Chen Tinghua, Zhang Shaochun, Qian Zonghua. 1 Scope
National Standard of the People's Republic of China
Ferromanganese-silicon
GB/T 4008—1996
Replaces GB4G08—87
This standard specifies the technical requirements, test methods, inspection rules, packaging, storage, transportation, marking and quality certificates for manganese silicon alloys. This standard is applicable to silicon alloys used as alloying agents, composite deoxidizers and desulfurizers in steelmaking and casting, and as reducing agents in smelting medium and low carbon ferromanganese
2 Referenced standards
The provisions contained in the following standards are the provisions of the original standards before being cited in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB365083 General provisions for acceptance, packaging, storage, transportation, marking and quality certificates of ferroalloys GB/T4U7U—94 Sample collection and preparation for chemical analysis of ferroalloys GB5686.1--88 Chemical analysis method for manganese silicon alloy: potentiometric titration method for determination of sales volume GB5 686.2—85 Chemical analysis method for manganese silicon alloy: Determination of silicon content by gravimetric method GH5686.3-88 Chemical analysis method for manganese silicon alloy: Determination of phosphorus content by neutralization titration G135686.4—85 Chemical analysis method for manganese silicon alloy: Determination of phosphorus content by molybdenum monitoring photometry GB5586.5:88 Chemical analysis method for manganese silicon alloy: Determination of carbon content by infrared absorption method GB/T13217-91 Sampling and testing methods for particle size of ferroalloy products 3 Technical requirements ||tt ||3.1 Brands and Chemical Composition
Manganese silicon alloy is divided into 8 brands according to the different contents of manganese, silicon and their impurities. Its chemical composition should comply with the provisions of Table|. Table 1 Chemical composition
FrMr6Si27
F-Mn67Si33
FeMn68Si22
60.0~67.0
63.0~70.0
55.0~72.
State Administration of Technical Supervision approved on September 27, 1996Si
25. 01 -~ 25. 4
22. (0- 25, 4:
2n. n-.-23.
Not implemented on March 1, 1997
FeMn64Si23
FeMntsSi18
FeMnf4Si13
FeMnG8Si16
FeMn61Si16
69.4~67.0
65.0~-72.0
63. 01~-72, 0
-60, 0~-57. 0
Note: To guarantee the element system, the British Society has required test elements: GB/T 4008 1996
20.0--25.
17. 0-~ 20 13
17.0---20.0www.bzxz.net
[4.0~17.0
3.2 If the purchaser has special requirements for the chemical composition, the supply and demand can negotiate separately. The classification method
is not too low.
3.3 Physical state
3.3.1 Nitrogen alloy is supplied in block or granular form. Its particle size range and allowable tolerance shall comply with the provisions of Table 2. Table 2 Particle size range
20-330
10~150
13~-30
Oversize
3.3.2 If the purchaser has special requirements for the physical state, the supply and demand can negotiate separately. 4 Test methods
4.1 Sampling and sample preparation
The sampling and preparation of samples for chemical analysis shall be carried out in accordance with GB360/T4010: 4.2 Analysis methods
The chemical analysis method of manganese silicon alloy shall be carried out in accordance with GB5686.1~5686.5. 4.3 Particle size inspection
The particle size inspection of manganese alloy shall be carried out in accordance with GB360/T4010. 5 Inspection rules
5.1 Quality inspection and acceptance
The quality inspection and acceptance of manganese silicon alloy shall comply with the provisions of GB360: Difference
Sieve undersize
CB/T 40081996
5.2 Batch
Mn content in Si-Si alloys fluctuates within the range of 1% and is of the same grade and group and is delivered in batches.
6 Packaging, storage, transportation, marking and quality certificate 6.1 Packaging
Mn-Si alloys are generally supplied in bulk, but can also be supplied in containers or bags. If supplied in containers or bags, there should be obvious markings on the outside of the packaging.
6.2 Storage, transportation, marking and quality certificate 1
The storage, transportation, marking and quality certificate of Manganese-Si alloys shall comply with the provisions of GB3650.
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