28-4C+Cb

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#28-4C+Cb

Description

28-4C+Cb High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: 28-4C+Cb

Category	Type	Steel Grade
Steel Grades	High Alloy	28-4C+Cb
		19-9DX
		19-9-W-Mo
		20-45-5
		20Mo-6 HS
		21-6 9LC
		22-4-9
		22-13-5
		25-4-4
		26-1
		9LC

Chemical composition(mass fraction)(wt.%) of the 28-4C+Cb

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.030	1.00	1.00	0.040	0.030	28.0-30.0	2.00-4.50
Mo	Al	Cu	Nb	Ti	V	Ce
3.60-4.20
N	Co	Pb	B	Other
≤0.045				Nb/Ta≥6*(C+N)

Mechanical Properties of steel grade 28-4C+Cb

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)
136 (≥)	159 (≥)	32	13	13	Solution and Aging, Annealing, Ausaging, Q+T,etc	443

Physical Properties of steel grade 28-4C+Cb

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
34	-	-			0.22	-
782	392	-	31.3	444		-
748	-	44	24.2			322	342

Heat Treatment of steel grade 28-4C+Cb

Heat treated : 1783°C - 1436°C

Technological Curves of steel grade 28-4C+Cb

No Curve

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