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China 舞钢Q/WTB 20控Cr 核电用20控Cr钢板技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20控Cr / 20控Cr
Category Grade Standard Region/Area Standard Content
Metals 20控Cr WYJ 411 China 核电用20控Cr钢板技术条件

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

Element Min Max Similar
Cu - 0.2500 -
Cr 0.2000 0.3000 -
Ni - 0.2500 -
S - 0.0150 -
P - 0.0250 -
Mn 0.3500 0.6500 -
Si 0.1700 0.3700 -
C 0.1700 0.2400 -

Mechanical Properties of steel grade 20控Cr

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)
238 (≥) 492 (≥) 21 24 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 212

Physical Properties of steel grade 20控Cr

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
23 - -     0.34 -  
532 993 - 33.3 131   -  
581 - 12 24.2   211 432

Heat Treatment of steel grade 20控Cr

Heat treated : 1667°C - 1269°C

Technological Curves of steel grade 20控Cr

Cross Reference Table (Equivalent Grade) of 20控Cr

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