IS 1570 (Part 2/Sec 1):1979 55C4 Steel Round Bar Listings

Grade Details

Grade	IS 1570 (Part 2/Sec 1):1979 55C4
Standard	IS 1570 (Part 2/Sec 1):1979
Description	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.
Applications	springs, knives, hand tools, agricultural tools, wear-resistant parts

Equivalent Grades

Grade	Standard	Region	Live Round Bar on M-EX
AISI 1055	AISI	USA	3 listings, 0 RFQs →
SAE J403 1055	SAE J403	USA	2 listings, 0 RFQs →
EN 10083-2 C55	EN 10083-2	Europe	3 listings, 0 RFQs →
NF A35-552 XC55	NF A35-552	France	0 listings, 2 RFQs →
JIS G4051 S55C	JIS G4051	Japan	3 listings, 0 RFQs →
SAE J403 1055	SAE J403	USA	No activity yet
BS 970 (Part 1) 060A57	BS 970 (Part 1)	UK	No activity yet
BS 970 EN9K	BS 970	UK	No activity yet

Supply & Demand: Round Bar See Full Supply & Demand →

IS 1570 (Part 2/Sec 1):1979 55C4 Round Bar Low Activity

Active IS 1570 (Part 2/Sec 1):1979 55C4 Round Bar Listings (For Sale) 2

IS 1570 (Part 2/Sec 1):1979 55C4 Round Bar

8.500 MT · Closes 28 Oct 2026

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IS 1570 (Part 2/Sec 1):1979 55C4 Round Bar

8.400 MT · Closes 30 Oct 2026

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

Related: All Round Bar grades · Carbon Steel