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K438G

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K438 K441
#K438G

Description

China GBT K438G conventional cast superalloy and K438G Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: K438G
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy K438G GBT China conventional cast superalloy
K17L
K18
K18B
K19
K19H
K423
K423A
K424
K430
K438

Chemical composition(mass fraction)(wt.%) of the K438G

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) W(%) Cu(%) Co(%) B(%) Nb(%) Al(%) Ti(%) Ta(%) Fe(%)
0.13-0.20 0.01 0.20 0.000 0.010000000000000000 15.30-16.30 Bal 1‘40-2.00 2.30-2.90 0.100 8.00-9.00 0.005-0.015 0.40-1.00 3.50-4.50 3.20-4.00 1.40-2.00 0.20

Mechanical Properties of steel grade K438G

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)
562 (≥) 371 (≥) 32 14 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical Properties of steel grade K438G

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
22 - -     0.44 -  
927 354 - 31.3 321   -  
637 - 33 12.2   214 223

Heat Treatment of steel grade K438G

Heat treated : 1326°C - 1352°C

Technological Curves of steel grade K438G

Cross Reference Table (Equivalent Grade) of K438G

Grade Standard Country Application
K438G GBT China conventional cast superalloy
K438 K441
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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