C55 1.0535 C53 - DIN 17222-1979

Grade	C55
Germany W-Nr.	1.0535
Old Grade
Corresponding Standard	DIN 17222-1979 Cold Rolled Steel Strips for Springs Technical Condition of Delivery
Classification	Carbon Steel

C55 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.52	0.15	0.6	-	-
Maximum Value	0.6	0.35	0.9	0.045	0.045

C55 Mechanical Properties

thickness t mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Elongation or Extension Rate δ %	Hardness HBW
t≤3*	Cold Rolled + Soft Annealing (G)	≤610	≥13	HV** ≤180
t≤2****	Cold Rolled + Quenching + Tempering (H+A)	*** 1150~1650		340~490
t≤2	Quenching			≥650

Approximate Comparison Table High-Quality Carbon Structural Steel

China	Japan	United States	International Organization for Standardization	Germany	France	European Standard		Russia	Sweden	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	SS	BS EN/BS
C55	S55C	1055	C55 C55E4	C55	AF70C55 C54	C55	1.0535	50 55	1655	070M55 50 En9

C55 Corresponding Standards(Same grade name, different standards)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!