Cm40 1.1189 - DIN 17200-1987

Cm40 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.37	-	0.5	-	0.02
Maximum Value	0.44	0.4	0.8	0.035	0.035

Cm40 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

Approximate Comparison Table Non-Alloy Steel for Quenching and Tempering

United States	International Organization for Standardization	Germany	France	European Standard
ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade
1040	C40R C40M2	Cm40	XC42H1u	C40R	1.1189

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