618

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618 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: 618

Category	Type	Steel Grade
Steel Grades	High Alloy	618
		T11310
		613
		614
		S41000
		615
		S41800
		616
		S42200
		617
		S44004

Chemical composition(mass fraction)(wt.%) of the 618

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
1.05	0.30	0.50			14.50
Mo	Al	Cu	Nb	Ti	V	Ce
4.00
N	Co	Pb	B	Other	Approximate bernum
				Fe...	14Cr-4Mo

Mechanical Properties of steel grade 618

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)
334 (≥)	617 (≥)	34	31	32	Solution and Aging, Annealing, Ausaging, Q+T,etc	343

Physical Properties of steel grade 618

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
42	-	-			0.14	-
499	152	-	31.3	441		-
322	-	11	41.2			232	311

Heat Treatment of steel grade 618

Heat treated : 1231°C - 1858°C

Technological Curves of steel grade 618

No Curve

Cross Reference Table (Equivalent Grade) of 618

Grade	Country	Application
417618		The Czech republic Stainless steel
17 618		The Czech republic Stainless steel
K6188	China	conventional cast superalloy

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Rfq.: sales@longhaisteel.com

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618