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GB/T 1298-2008 Carbon tool seels

Standard Number:  GB/T 1298-2008
Title:  Carbon tool seels
Language:  Simplified Chinese
Publication Date:  2008/5/13
Execute Date:  2008/11/1
Revocatory Date:  2015/9/1
Standard Type:  Product
International Classification for Standards (ICS)METALLURGY>>Iron and steel products>>Tool steels
Publisher:  Chinese Standards(GB)
Price:16.80  
Number of Pages:16  

Preface: With this standard ASTM A686  92 degree of consistency of the carbon tool steel specification is not equivalent. Instead of this standard GB/T 1298-1986 Carbon tool steels--Technical requirements "carbon tool steel technical conditions" and GB/T227-1991 test method for tool steel hardenability. This standard and GB/T 1298-1986 Carbon tool steels--Technical requirements Compared to the main changes are as follows: - standard name to: carbon tool steel; - increase the wire rod and the related technical requirements; - increases the content of the order; - increase of residual elements tungsten, molybdenum and vanadium content (mass fraction), and the residual copper content (mass fraction) by 0.30% to 0.25 %; - changed the rules of smelting method; - changes the cold drawn steel delivery state provisions; - to cancel the fracture test; - the regulation of macrostructure level is increased by acid leaching, and as will check project; The GB/T227-1991 "test method for tool steel hardenability" as the standard The appendix B. The appendix A of this international standard and appendix B are normative appendix. This standard put forward by the China iron and steel association. This standard by the national standardization technical committee under centralized steel. This standard drafting unit: chongqing donghua special steel co., LTD., northeast special steel group co., LTD. (dalian), information standards institute of metallurgy industry. this Standard main draftsmen: Xie Jinggong, Liu Baoshi, yun, Li Qingyan, Dai Jiang. This standard replaced all previous releases of standard: GB/T1298-1977, GB/T 1298-1986 Carbon tool steels--Technical requirements; GB/T 227-1963 testing method of the quenching hardenability of carbon tool steels, GB/T 227-1991 Tool steel-method of hardenability test.   
Description:Instead of this standard gb/t1298-1986 "carbon tool steel technical conditions" and gb/t227-1991 "test method for tool steel hardenability. This standard specifies the size of the carbon tool steel, shape and allowable deviation, technical requirements, test methods, inspection rules, packaging, mark and quality certificate, etc. This standard applies to carbon tool steel hot rolling, forging, cold drawn and silver steel and steel wire rod, its chemical composition is also applicable to ingot, billet and its system Product. Compared this standard with gb/t1298-1986, the main changes are as follows:
- standard name to: carbon tool steel.
- increases the "rod" and related technical requirements;
- increases the "content" order;
- increase of residual elements tungsten, molybdenum and vanadium content (mass fraction), and the residual copper content is reduced by 0.30% to 0.25% (mass fraction) ;
- changed the rules of smelting method;
- modified the cold drawn steel delivery state provisions;
- cancel "fracture test";
--, the regulation of macrostructure level is increased by acid leaching, and as will check project;
- - the original gb/t227-1991 "test method for tool steel hardenability" as the standard for this appendix b.  
Cross References:GB/T 1298-1986 Carbon tool steels--Technical requirements;
GB/T 227-1991
ASTM A686-1992,
GB/T 222;
GB/T 223.11;
GB/T 223.12;
GB/T 223.14;
GB/T 223.18;
GB/T 223.19;
GB/T 223.23;
GB/T 223.26;
GB/T 223.43;
GB/T 223.58;
GB/T 223.59;
GB/T 223.60;
GB/T 223.61;
GB/T 223.62;
GB/T 223.63;
GB/T 223.68;
GB/T 223.69;
GB/T 223.71;
GB/T 223.72;
GB/T 223.74;
GB/T 223.76;
GB/T 224;
GB/T 226;
GB/T 230.1;
GB/T 231.1;
GB/T 702;
GB/T 905;
GB/T 908;
GB/T 2101;
GB/T 3207;
GB/T 4336;
GB/T 1299-2000;
GB/T 13298;
GB/T 14981;
GB/T 17505;
GB/T 20066;
GB/T 20123;
GB/T 20125
  
File Format:  PDF(Acrobat Reader) or Word version doc Document
File Size:  285KB
Tile in English:  Carbon tool seels

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