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

Datasheet for: Steel Grades:High Alloy: 612

Category	Type	Steel Grade
Steel Grades	High Alloy	612
		28NiCrMo4
		1.6513
		601
		602
		603
		604
		610
		T20811
		611
		T11302

Chemical composition(mass fraction)(wt.%) of the 612

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.87	0.30	0.20			4.00
Mo	Al	Cu	Nb	Ti	V	Ce
8.25					1.90
N	Co	Pb	B	Other	Approximate bernum
				Fe...	≈AISIM10

Mechanical Properties of steel grade 612

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)
798 (≥)	194 (≥)	34	14	21	Solution and Aging, Annealing, Ausaging, Q+T,etc	443

Physical Properties of steel grade 612

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
23	-	-			0.22	-
665	338	-	42.3	132		-
487	-	34	22.2			112	233

Heat Treatment of steel grade 612

Heat treated : 1852°C - 1751°C

Technological Curves of steel grade 612

No Curve

Cross Reference Table (Equivalent Grade) of 612

Grade	Standard	Country	Application
ICI 6120	AISI	USA
416121			The Czech republic Structural steel
16121			The Czech republic Structural steel
K612		China	conventional cast superalloy
K612		China	conventional cast superalloy
6120		USA	Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
6120		USA	Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures

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612