C55 1.0535 - NF EN 10083-2-2006

Grade	C55
	1.0535
Corresponding Standard	NF EN 10083-2-2006 Tempered non-alloy structural steel
Classification	Carbon Steel

C55 Chemical Element Composition Content (%)

Component	C ^①	Si	Mn	P	S	Cr	Ni	Mo	More
Minimum Value	0.52	-	0.6	-	-	-	-	-	Cr+Mo+Ni≤0.63 ①
Maximum Value	0.6	0.4	0.9	0.045	0.045	0.4	0.4	0.1	Cr+Mo+Ni≤0.63 ①

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: d ≤ 16mm; t ≤ 8mm	Quenching + Tempering (+QT)	800~950	≥550	≥12	≥30
Steel: 16mm ≤ d ≤ 40mm; 8mm ≤ t ≤ 20mm	Quenching + Tempering (+QT)	750~900	≥490	≥14	≥35
Steel: 40mm ≤ d ≤ 100mm; 20mm ≤ t ≤ 60mm	Quenching + Tempering (+QT)	700~850	≥420	≥15	≥40
Steel: d ≤ 16mm; t ≤ 16mm	Normalizing (+N)	≥680	≥370	≥11
Steel: 16mm ≤ d ≤ 100mm; 16mm ≤ t ≤ 100mm	Normalizing (+N)	≥640	≥330	≥12
Steel: 100mm ≤ d ≤ 250mm; 100mm ≤ t ≤ 250mm	Normalizing (+N)	≥620	≥300	≥12
Steel:	Processed to a Certain Shearability (+S)					① ≤255
Steel:	Softening Annealing (+A)					≤229

Approximate Comparison Table

China	Japan	United States	International Organization for Standardization	France	Russia	United Kingdom
GB	JIS	ASTM/AISI	ISO	NF EN/NF	GOST	BS EN/BS
55 (GB/T 699-1999)	S55C	1055	C55 C55E4 C55M2 (ISO 630-1:1987)	C55 XC55	55	060A57 070M55

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"!