C55 1.0535 - DIN 17200-1987

Grade	C55
Germany W-Nr.	1.0535
Corresponding Standard	DIN 17200-1987 Steels for Quenching and Tempering; Technical Delivery Conditions
Classification	Carbon Steel

C55 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Pb ^*
Minimum Value	0.52	-	0.6	-	-	0.15
Maximum Value	0.6	0.4	0.9	0.045	0.045	0.33

C55 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
Steel; All Sizes	Shearable condition (C)					≤255
Steel; All Sizes	Softening Annealing (G)					≤229
Steel; d≤16	Quenching and Tempering (V)	800~950	≥550	≥12	≥25
Steel; 16<d≤40	Quenching and Tempering (V)	750~900	≥500	≥14	≥30
Steel; 40<d≤100	Quenching and Tempering (V)	700~850	≥430	≥15	≥35
Bars; 16<d≤100	Normalizing (N)	660~830	≥360		≥15
Flat steel; d≤16	Normalizing (N)	630~870	≥370		Longitudinal ≥15
Flat steel; 16<d≤100	Normalizing (N)	630~870	≥330		≥15
Flat Steel; 100<d≤160	Normalizing (N)	610~850	≥300		≥13

New and Old Grade Replacement List

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"!