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Description

USA ASTM CK-20 Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application and CK-20 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: CK-20
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy CK-20 ASTM USA Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application
50Cr-50Ni-Nb
CF-8
CG-12
CF-20
CF-8M
CF-8C
CF-16F
CF-16Fa
CH-10
CH-20

Chemical composition(mass fraction)(wt.%) of the CK-20

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%)
0.2 2.00 2.00 0.04 0.04 23.0-27.0 19.0-22.0

Mechanical Properties of steel grade CK-20

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)
933 (≥) 584 (≥) 33 14 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

Physical Properties of steel grade CK-20

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
43 - -     0.22 -  
412 281 - 42.3 234   -  
171 - 23 43.2   113 424

Heat Treatment of steel grade CK-20

Heat treated : 1847°C - 1732°C

Technological Curves of steel grade CK-20

Cross Reference Table (Equivalent Grade) of CK-20

Grade Standard Country Application
CK-20 ASTM USA
CK-20 ASTM USA Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application
CK-20 ASTM USA Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application

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