Chemical Composition Base Element Fe (Iron) Mechanical Properties Yield Strength 550 to 690 MPa Rockwell 30-T scale 73 to 79 Other Information Material Class Ferrous Alloy Alloy Family Carbon Steel Alloy Group Miscellaneous or unclassified Alloy Sub-Group Miscellaneous and special purpose steels Country India Standards Body BIS (India) Description Double cold-reduced electrolytic tinplate strip supplied in coils for cutting into sheet Alternate Name DR 9 Designation DR 620 Specification Type Standard Specification IS 13955 Specification Year 1998 Specification Status Active Specification Status Notes active 1998 Source Worldwide Guide to Equivalent Irons and Steels, 5th ed. ASM International 2006 Available forms Wrought Links Organizations Bureau of Indian Standards (BIS)
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Chemical Composition

Mechanical Properties

550 to 690

MPa