Ck40 1.1186 - DIN 17200-1987

Ck40 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.37	-	0.5	-	-
Maximum Value	0.44	0.4	0.8	0.035	0.03

Ck40 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	Impact Energy Absorption KV2 J
Steel; All Sizes	Softening Annealing (G)					≤197
Steel; d≤16	Quenching and Tempering (V)	650~800	≥460	≥16	≥35		ISO-V ≥30
Steel; 16<d≤40	Quenching and Tempering (V)	630~780	≥400	≥18	≥40		≥30
Steel; 40<d≤100	Quenching and Tempering (V)	600~750	≥350	≥19	≥45		≥30
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

1 Approximate Comparison Table

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

Russia

United Kingdom

ISC

CNS

JIS

ASTM/AISI

UNS

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

GOST

BS EN/BS

U20402

S40C

SM40C

1040

G10400

C40E4

C40E
Ck40

1.1186

C40E
XC42

C40E
080M40

2 Approximate Comparison Table

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

3 Approximate Comparison Table

Japan	United States	International Organization for Standardization	Germany	France	European Standard		Russia	United Kingdom
JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	BS EN/BS
S40C	1040	C40E4	Ck40	XC42H1	C40E	1.1186	40	080M40 CS40

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