C40 1.0511 - DIN 17200-1987

Grade	C40
Germany W-Nr.	1.0511
Corresponding Standard	DIN 17200-1987 Steels for Quenching and Tempering; Technical Delivery Conditions
Classification	Carbon Steel

C40 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Pb ^*
Minimum Value	0.37	-	0.5	-	-	0.15
Maximum Value	0.44	0.4	0.8	0.045	0.045	0.33

C40 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	Softening Annealing (G)					≤197
Steel; d≤16	Quenching and Tempering (V)	650~800	≥460	≥16	≥30
Steel; 16<d≤40	Quenching and Tempering (V)	630~780	≥400	≥18	≥35
Steel; 40<d≤100	Quenching and Tempering (V)	600~750	≥350	≥19	≥40
Flat steel; d≤16	Normalizing (N)	530~720	≥320		Longitudinal ≥19
Flat steel; 16<d≤100	Normalizing (N)	530~720	≥290		≥19
Flat Steel; 100<d≤160	Normalizing (N)	510~700	≥260		≥17

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	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	EN	Numerical Grade	GOST	BS EN/BS
40	S40C	1038 1040	C40 C40E4	C40 Ck40	1.0511	AF60C40 AF60C45 XC42HI	C40	1.0511	40	070M40 080M40 En8

C40 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"!