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GH742

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GH738(GH684) GH188
#GH742

Description

China GBT GH742 wrought Fe/Ni-base superalloy and GH742 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: GH742
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy GH742 GBT China wrought Fe/Ni-base superalloy
GH202
GH220
GH413
GH500
GH586
GH648
GH698
GH708
GH710
GH738(GH684)

Chemical composition(mass fraction)(wt.%) of the GH742

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) W(%) Cu(%) Co(%) B(%) Nb(%) Al(%) Ti(%) Fe(%)
0.04 -0.08 0.30 0.40 0.015 0.010 13.00-15.00 Bal 4.50-5.50 - 1.00 9.00-11.00 ≤0.010 2. 40-2- 80 2.40-2. 80 2. 40-2. 80 ≤1.00

Mechanical Properties of steel grade GH742

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)
648 (≥) 886 (≥) 41 44 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical Properties of steel grade GH742

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
33 - -     0.31 -  
429 589 - 32.3 343   -  
691 - 22 24.2   314 312

Heat Treatment of steel grade GH742

Heat treated : 1693°C - 1862°C

Technological Curves of steel grade GH742

Cross Reference Table (Equivalent Grade) of GH742

Grade Standard Country Application
GH742 GBT China wrought Fe/Ni-base superalloy
GH738(GH684) GH188
Available Suppliers
Jiangyou Longhai Special Steel Co.,Ltd.
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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