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IS 1570 (Part 2/Sec 1):1979 55C4 Steel: Specifications & Listings

IS 1570 (Part 2/Sec 1):1979 55C4: Unalloyed carbon steel designated 55C4 in IS 1570 (Part 2/Sec 1):1979, with carbon 0.50-0.60% and manganese 0.30-0.60%. Old designation C55. The standard was reaffirmed in 2004.

Forms: Round Bar Category: Carbon Steel
Grade Details
GradeIS 1570 (Part 2/Sec 1):1979 55C4
Standard IS 1570 (Part 2/Sec 1):1979
Applicationssprings, knives, hand tools, agricultural tools, wear-resistant parts
Most Active InCentral (Madhya Pradesh)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
AISI 1055 AISI USA 3 listings, 0 RFQs →
SAE J403 1055 SAE J403:2014 USA 2 listings, 0 RFQs →
EN 10083-2 C55 EN 10083-2:2006 Europe 3 listings, 0 RFQs →
NF A35-552 XC55 NF A35-552:1986 France 0 listings, 2 RFQs →
JIS G4051 S55C JIS G4051:2009 Japan 3 listings, 0 RFQs →
SAE J403 1055 SAE J403:2001 USA No activity yet
BS 970 (Part 1) 060A57 BS 970 (Part 1):1983 UK No activity yet
BS 970 EN9K BS 970:1955 UK No activity yet
Supply & Demand by FormSee Full Supply & Demand →
Round Bar →
Low Activity
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
BS 970 (Part 1) 070M55 BS 970 (Part 1):1983 Strong Match
AISI 1055 AISI Strong Match
IS 1570 (Part 2/Sec 1) 50C4 IS 1570 (Part 2/Sec 1):1979 Strong Match
IS 1570 (Part 2/Sec 1) 60C4 IS 1570 (Part 2/Sec 1):1979 Strong Match
IS 1570 (Part 2/Sec 1) 55C8 IS 1570 (Part 2/Sec 1):1979 Strong Match
SAE J403 1055 SAE J403:2014 Strong Match
SAE J403 1055 SAE J403:2001 Strong Match
SAE J403 1055 SAE J403:2009 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
0.50-0.60 0.30-0.60
Typical Available Sizes
Round Bar 16-250 mm dia
Flat Bar 25-100 mm width
Sizes are indicative. Contact seller for exact availability.

Popular forms for this grade:

Round Bar (2)

Active IS 1570 (Part 2/Sec 1):1979 55C4 Listings on M-EX (For Sale)

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IS 1570 (Part 2/Sec 1):1979 55C4 Round Bar
8.500 MT
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IS 1570 (Part 2/Sec 1):1979 55C4 Round Bar
8.400 MT
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Buyer RFQs for IS 1570 (Part 2/Sec 1):1979 55C4

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No open buyer requirements for IS 1570 (Part 2/Sec 1):1979 55C4 at this time.

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