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1.2678

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X45CoCrWV5-5-5 56NiCrMoV7
#1.2678

Description

Germany DIN 1.2678 Hot working alloy tool steel and 1.2678 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: 1.2678
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy 1.2678 DIN Germany Hot working alloy tool steel
1.2581
45CrVMoW5-8
1.2603
X37CrMoW5-1
1.2606
X60WCrMoV9-4
1.2622
X30WCrCoV9-3
1.2662
X45CoCrWV5-5-5

Chemical composition(mass fraction)(wt.%) of the 1.2678

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Mo(％) V(%) W(%)
0.45-0.50 0.30-0.50 0.30-0.50 Max 0.025 Max 0.025 4.00-5.00 0.40-0.60 1.80-2.10 4.00-5.00

Mechanical Properties of steel grade 1.2678

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
552 (≥) 558 (≥) 24 11 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade 1.2678

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 - -     0.24 -  
419 496 - 21.3 432   -  
745 - 22 32.2   122 423

Heat Treatment of steel grade 1.2678

Heat treated : 1149°C - 1231°C

Technological Curves of steel grade 1.2678

Cross Reference Table (Equivalent Grade) of 1.2678

Grade Standard Country Application
1.2678 DIN Germany Hot working alloy tool steel
X45CoCrWV5-5-5 56NiCrMoV7
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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...

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