Steel grades

Steel grades

Steel grades to classify various steels by their composition and physical properties have been developed by a number of standards organizations.

*SAE steel grades
*British Standards
*International Organization for Standardization ISO/TS 4949:2003
*For alloys in general (including steel), unified numbering system (UNS) of ASTM International and the Society of Automotive Engineers (SAE).
*Japanese steel grades
*Germany steel grades : DIN standard
*China steel grades : GB standard


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