1.2778

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#1.2778

Description

1.2778 Mould Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Mould Steel: 1.2778

Category	Type	Steel Grade
Steel Grades	Mould Steel	1.2778
		1.2201
		G60CrMoV10-7
		1.2320
		G48CrMoV6-7
		1.2326
		GS-80CrVW4-3
		1.2590
		GS-55NiCrMoV6
		1.2713
		GS-20MoNi33-13

Chemical composition(mass fraction)(wt.%) of the 1.2778

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.15-0.25	0.20-0.50	0.50-0.80	0.025	0.025		3.00-3.60
Mo	Al	Cu	Nb	Ti	V	Ce
3.00-3.60
N	Co	Pb	B	Other

Mechanical Properties of steel grade 1.2778

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)
474 (≥)	885 (≥)	12	44	14	Solution and Aging, Annealing, Ausaging, Q+T,etc	421

Physical Properties of steel grade 1.2778

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
44	-	-			0.33	-
356	268	-	42.3	433		-
341	-	33	21.2			111	212

Heat Treatment of steel grade 1.2778

Heat treated : 1848°C - 1278°C

Technological Curves of steel grade 1.2778

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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