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Global 企业标准 20CT and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20CT / 20CT
Category Grade Standard Region/Area Standard Content
Metals 20CT -- Global

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

Element Min Max Similar
Ti 0.0200 0.1200 -
Si 0.2000 0.3500 -
Cu - - -
Co 0.3500 0.7000 -
Be 1.9000 2.2500 -

Mechanical Properties of steel grade 20CT

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)
274 (≥) 827 (≥) 41 34 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade 20CT

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
11 - -     0.13 -  
616 557 - 34.3 134   -  
853 - 13 24.2   332 323

Heat Treatment of steel grade 20CT

Heat treated : 1962°C - 1423°C

Technological Curves of steel grade 20CT

Cross Reference Table (Equivalent Grade) of 20CT

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