X40MnCr 18

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#X40MnCr # #18

Description

X40MnCr 18 Alloy Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Alloy Steel: X40MnCr 18

Category	Type	Steel Grade
Steel Grades	Alloy Steel	X40MnCr 18
		X35Mn 21
		GX120Mn 13
		1.3805
		1.3813
		X40MnCrN 19
		1.3816
		X8CrMnN 18-8
		1.3818
		X55MnCrN 18-4
		1.3817

Chemical composition(mass fraction)(wt.%) of the X40MnCr 18

C	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni	Mo	Other
0.30-0.50	1.00	17.0-19.0	0.060	0.030	0.30-0.50	≤ 1.00	-------	N ≤ 0.10

Mechanical Properties of steel grade X40MnCr 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)
194 (≥)	456 (≥)	21	24	14	Solution and Aging, Annealing, Ausaging, Q+T,etc	214

Physical Properties of steel grade X40MnCr 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
13	-	-			0.14	-
164	124	-	21.3	414		-
959	-	31	33.2			433	321

Heat Treatment of steel grade X40MnCr 18

Heat treated : 1545°C - 1923°C

Technological Curves of steel grade X40MnCr 18

No Curve

Cross Reference Table (Equivalent Grade) of X40MnCr 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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