X8CrNb 18

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#X8CrNb # #18

Description

X8CrNb 18 Alloy Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Alloy Steel: X8CrNb 18

Category	Type	Steel Grade
Steel Grades	Alloy Steel	X8CrNb 18
		1.4028
		X30Cr 13
		1.4031
		X39Cr 13
		1.4310
		X9CrNi 18-8
		X12CrNi 17-7
		1.4401
		X4CrNiMo 17-12-2
		1.4518

Chemical composition(mass fraction)(wt.%) of the X8CrNb 18

C	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni	Mo	Other
≤ 0.10	1.50	1.50	0.030	0.030	16.0-18.0	---------	-------------	Cu 2.75-3.50 Nb 12*C N 0.12-0.25

Mechanical Properties of steel grade X8CrNb 18

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)
556 (≥)	862 (≥)	24	34	21	Solution and Aging, Annealing, Ausaging, Q+T,etc	244

Physical Properties of steel grade X8CrNb 18

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
24	-	-			0.12	-
294	217	-	43.3	412		-
451	-	12	33.2			313	224

Heat Treatment of steel grade X8CrNb 18

Heat treated : 1725°C - 1198°C

Technological Curves of steel grade X8CrNb 18

No Curve

Cross Reference Table (Equivalent Grade) of X8CrNb 18

Grade	Standard	Country	Application
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
UNS G10050	UNS	USA	General use carbon steel bar
ASTM 1006	ASTM	USA	General use carbon steel bar
UNS G10060	UNS	USA	General use carbon steel bar

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