Cm55 1.1209 - DIN 17204-1990

Cm55 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.52	-	0.6	-	0.02
Maximum Value	0.6	0.4	0.9	0.035	0.035

Cm55 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
Hot drawn, cold drawn pipes	Annealing					≤229
Pipe material t≤16	Normalizing (N)	670~820	≥370	≥14(long.)；≥12(tr.)
Pipe material 16<t≤40	Normalizing (N)	650~800	≥350	≥15(long.)；≥13(tr.)
Pipe material 40<t≤80	Normalizing (N)	620~770	≥340	≥15(long.)；≥13(tr.)
Pipes t≤8	Quenching + Tempering (V)	800~1000	≥550	≥12(long.)；≥10(tr.)	≥30
Pipes; 8< t≤20	Quenching + Tempering (V)	750~950	≥490	≥14(long.)；≥12(tr.)	≥35
Pipes; 20< t≤50	Quenching + Tempering (V)	700~900	≥420	≥15(long.)；≥13(tr.)	≥40
Pipe; 50<t≤80	Quenching + Tempering (V)	660~860	≥390	≥15(long.)；≥13(tr.)	≥40

Approximate Comparison Table

International Organization for Standardization	Germany	France	European Standard
ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade
C55M2	Cm55	XC55H1u	C55R	1.1209

Cm55 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"!