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IS 1570 (Part 2/Sec 1):1979 65C6 Steel: Specifications & Listings

IS 1570 (Part 2/Sec 1):1979 65C6: Unalloyed carbon steel designated 65C6 in IS 1570 (Part 2/Sec 1):1979, with carbon 0.60-0.70% and manganese 0.50-0.80%. Old designation C65. The standard was reaffirmed in 2004.

Category: Carbon Steel
Grade Details
GradeIS 1570 (Part 2/Sec 1):1979 65C6
Standard IS 1570 (Part 2/Sec 1):1979
ApplicationsBillets and bars for forgings, carbon steel forgings, cold rolled strip for springs and spring washers (the standard links this grade to IS 1875, IS 2004, IS 2507, IS 4072)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
IS 1875 Class 6 IS 1875:1992 India No activity yet
SAE J403 1065 SAE J403:2001 USA No activity yet
SAE J403 1070 SAE J403:2001 USA No activity yet
SAE J403 1074 SAE J403:2001 USA No activity yet
SAE J403 1566 SAE J403:2001 USA No activity yet
BS 970 (Part 1) 060A67 BS 970 (Part 1):1991 UK No activity yet
BS 970 (Part 1) 070A67 BS 970 (Part 1):1991 UK No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
SAE J403 1065 SAE J403:2014 Strong Match
SAE J403 1065 SAE J403:2001 Strong Match
SAE J403 1065 SAE J403:2009 Strong Match
IS 1570 (Part 2/Sec 1) 60C6 IS 1570 (Part 2/Sec 1):1979 Strong Match
IS 1570 (Part 2/Sec 1) 70C6 IS 1570 (Part 2/Sec 1):1979 Strong Match
BS 970 (Part 1) 060A62 BS 970 (Part 1):1991 Strong Match
BS 970 (Part 1) 060A67 BS 970 (Part 1):1991 Strong Match
SAE J403 1566 SAE J403:2014 Strong Match
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C Mn
0.60-0.70 0.50-0.80
Mechanical Properties
Tensile Strength >=750 MPa
Elongation >=10%

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