2.4778

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#2.4778

Description

2.4778 Mould Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Mould Steel: 2.4778

Category	Type	Steel Grade
Steel Grades	Mould Steel	2.4778
		1.4874
		GX50NiCrCoW35-25-15-5
		1.4869
		G-NiCr15
		2.4815
		G-NiCr28W
		2.4879
		G-NiCr50Nb
		2.4680
		G-CoCr28

Chemical composition(mass fraction)(wt.%) of the 2.4778

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.05-0.25	0.50-1.50	1.50	0.040	0.030	27.0-30.0	≤ 4.00
Mo	Al	Cu	Nb	Ti	V	Ce
≤ 0.50			≤ 0.50
N	Co	Pb	B	Other
	48.0-52.0			Fe

Mechanical Properties of steel grade 2.4778

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)
755 (≥)	343 (≥)	14	32	43	Solution and Aging, Annealing, Ausaging, Q+T,etc	322

Physical Properties of steel grade 2.4778

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
31	-	-			0.34	-
873	949	-	41.3	133		-
639	-	12	33.2			144	412

Heat Treatment of steel grade 2.4778

Heat treated : 1298°C - 1943°C

Technological Curves of steel grade 2.4778

No Curve

Available Suppliers

Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

Rfq.: sales@longhaisteel.com

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