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IS 1570 (Part 2/Sec 1):1979 70C6 Steel: Specifications & Listings

IS 1570 (Part 2/Sec 1):1979 70C6: Unalloyed carbon steel designated 70C6 in IS 1570 (Part 2/Sec 1):1979, with carbon 0.65-0.75% and manganese 0.50-0.80%. Old designation C70. The standard was reaffirmed in 2004.

Category: Carbon Steel
Grade Details
GradeIS 1570 (Part 2/Sec 1):1979 70C6
Standard IS 1570 (Part 2/Sec 1):1979
ApplicationsCold rolled strip for springs, spring washers and cold rolled medium and high carbon strip (the standard links this grade to IS 2507, IS 4072, IS 7226)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
SAE J403 1070 SAE J403:2014 USA No activity yet
SAE J403 1074 SAE J403:2014 USA No activity yet
BS 970 (Part 1) 060A67 BS 970 (Part 1):1991 UK No activity yet
BS 970 (Part 1) 060A72 BS 970 (Part 1):1991 UK No activity yet
SAE J403 1075 SAE J403:2001 USA No activity yet
SAE J403 1078 SAE J403:2001 USA No activity yet
SAE J403 1566 SAE J403:2001 USA 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 1070 SAE J403:2014 Strong Match
SAE J403 1070 SAE J403:2001 Strong Match
SAE J403 1070 SAE J403:2009 Strong Match
IS 1570 (Part 2/Sec 1) 65C6 IS 1570 (Part 2/Sec 1):1979 Strong Match
IS 1570 (Part 2/Sec 1) 75C6 IS 1570 (Part 2/Sec 1):1979 Strong Match
SAE J403 1074 SAE J403:2014 Strong Match
BS 970 (Part 1) 060A67 BS 970 (Part 1):1991 Strong Match
BS 970 (Part 1) 060A72 BS 970 (Part 1):1991 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
0.65-0.75 0.50-0.80

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