X55CrMnNiN 20-8

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#X55CrMnNiN # #20-8

Description

X55CrMnNiN 20-8 Stainless Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Stainless Steel: X55CrMnNiN 20-8

Category	Type	Steel Grade
Steel Grades	Stainless Steel	X55CrMnNiN 20-8
		X45SiCr 4
		X45CrSi 9-3
		X40CrSiMo 10-2
		X80CrSiMoW 15-2
		X85CrMoV 18-2
		X60CrMnMoVNbN 21-10
		X33CrNiMnN 23-8
		X53CrMnNiNbN 21-9
		X53CrMnNiN 21-9
		X45CrNiW 18-9

Chemical composition(mass fraction)(wt.%) of the X55CrMnNiN 20-8

C	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni	Mo	Other
0.50-0.60	0.25	7.00-10.00	0.045	0.030	19.50-21.50	1.50-2.75	≤ 0.50	N 0.20-0.40

Mechanical Properties of steel grade X55CrMnNiN 20-8

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
213 (≥)	451 (≥)	12	32	31	Solution and Aging, Annealing, Ausaging, Q+T,etc	232

Physical Properties of steel grade X55CrMnNiN 20-8

Temperature (°C)	Modulus of elasticity (GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity (W/m·°C)	Specific thermal capacity (J/kg·°C)	Specific electrical resistivity (Ω mm²/m)	Density (kg/dm³)	Poisson’s coefficient, ν
32	-	-			0.24	-
398	613	-	41.3	241		-
752	-	34	11.2			434	424

Heat Treatment of steel grade X55CrMnNiN 20-8

Heat treated : 1754°C - 1476°C

Technological Curves of steel grade X55CrMnNiN 20-8

No Curve

Cross Reference Table (Equivalent Grade) of X55CrMnNiN 20-8

Grade	Standard	Country	Application
X55CrMnNiN20-8	DIN	Germany	Valve steel
X55CrMnNiN20-8	AFNOR	France	Valve Internal Combustion Engines steel (NF-EN 1009-1998)
ISO X55CrMnNiN20 8			ISO standard valve austenite steel
Q195		China	Engineering and welding
Q215		China	Engineering and welding
Q215 B		China	Engineering and welding
Q235		China	Engineering and welding
Q235 B		China	Engineering and welding
Q235 C		China	Engineering and welding
Q235 D		China	Engineering and welding
Q255 A		China	Engineering and welding
Q255 B		China	Engineering and welding
Q275		China	Engineering and welding
Q235q C		China	Bridge structure with steel
Q235q D		China	Bridge structure with steel
Q345q E		China	Bridge structure with steel
Q345q C		China	Bridge structure with steel
ASTM 1030	ASTM	USA	General use carbon steel bar
UNS G10300	UNS	USA	General use carbon steel bar
ASTM 1005	ASTM	USA	General use carbon steel bar

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