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GB/T 222-2006 Permissible tolerances for chemical composition of steel products

Standard Number:  GB/T 222-2006
Title:  Permissible tolerances for chemical composition of steel products
Language:  Simplified Chinese
Replaced by Standard:   GB/T 222-1984

Replacing Standard:  ????GB/T 222-1984

Publication Date:  2006/2/5
Execute Date:  2006/8/1
Status:  Current
Standard Type:  Generalites
International Classification for Standards (ICS)METALLURGY>>Ferrous metals>>Steels
Publisher:  Chinese Standards(GB)
Price:10.80  
Number of Pages:  

Preface: This standard is based on GB/T222-1984 (steel chemical analysis using sampling method to sample and finished product chemical composition in allowable deviation of finished product chemical composition of allowable deviation based on the relevant part of revision. This standard instead of a 1984 standard GB/T222 steel finished product chemical composition of the allowable deviation of related parts, related to the steel Chemical analysis using sampling method to sample and formulate separate standards. This standard and GB/T222-1984 standard production in the chemical composition of allowable deviation of the main changes are as follows: - table 1 scope of alloy steel instead of common carbon steel and low alloy steel and low alloy steel; Table 2 is changed to the applicable scope of the alloy steel (1984) 6.1, the equivalent of 5. L); - clear the deviation value in table 1 and table 2 is suitable for the cross-sectional area is not more than 65000 mm, the steel (this version 5.1); - increases the provisions of the finished product instead of melting analysis (this version 5.4); - adjust the table 1 and table 2 carbon, manganese and other elements of the deviation value, increase the aluminum, Drilling, nitrogen, calcium and other elements of the rules. This standard by the national metallurgical industry is put forward. This standard by the national standardization technical committee of steel under this standard drafting unit: metallurgical industry information standards institute. Main drafter of this standard: wu thought, LiYan, Liu Baoshi, Dai Jiang this standard first published in August 1984   
Description:This standard specifies the alloy steel (except for rimming steel), low alloy steel, alloy steel of finished steel products (including billet) relative to the provisions of the chemical composition of chemical composition of smelting allow partial new threshold value, and gives the definition of related terms. This standard applies to steel product standards, technical specifications of the finished product chemical composition of the provisions of the allowable deviation.  
File Format:  PDF(Acrobat Reader) or Word version doc Document
File Size:  894KB
Tile in English:  Permissible tolerances for chemical composition of steel products

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