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Description

China GBT K24 conventional cast superalloy and K24 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: K24
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy K24 GBT China conventional cast superalloy
K430
K438
K438G
K441
K461
K477
K4801
K491
K23
K23A

Chemical composition(mass fraction)(wt.%) of the K24

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%) V(%) W(%) Co(%) B(%) Nb(%) Al(%) Ti(%) Fe(%)
0.14-0.20 0.40 0.40 0.015 0.015000000000000000 8.50-10.50 Bal 2.70-3.40 0.500-1.000 1.00-1.80 12.00-15-00 0.015 0.50-1 .00 5.00-5.70 4.20-4.70 2.00

Mechanical Properties of steel grade K24

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)
537 (≥) 759 (≥) 41 12 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade K24

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
12 - -     0.33 -  
274 486 - 11.3 134   -  
256 - 44 21.2   133 213

Heat Treatment of steel grade K24

Heat treated : 1821°C - 1954°C

Technological Curves of steel grade K24

Cross Reference Table (Equivalent Grade) of K24

Grade Standard Country Application
K24 GBT China conventional cast superalloy
K242 GBT China conventional cast superalloy

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