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China 舞钢Q/WTB WDB620D 调质 WDB620 钢板技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: WDB620D / WDB620D
Category Grade Standard Region/Area Standard Content
Metals WDB620D WJX 025 China 调质 WDB620 钢板技术条件

Chemical composition(mass fraction)(wt.%) of the WDB620D

Element Min Max Similar
V 0.0200 0.0600 -
Mo - 0.3000 -
Cr - 0.3000 -
Ni 0.2000 0.5000 -
Cu - 0.2500 -
S - 0.0080 -
P - 0.0150 -
Mn 1.0000 1.6000 -
Si 0.1500 0.4000 -
C - 0.0900 -
Pcm - 0.2500 -
Pcm - 0.2300 -
Pcm - 0.2000 -
B - 0.0030 -
Ti - 0.0500 -
V - 0.0500 -
Nb - 0.0500 -
Mo - 0.5000 -
Cr - 0.5000 -
Ni - 1.5000 -
S - 0.0100 -
P - 0.0200 -
Mn 1.0000 1.6000 -
Si 0.1500 0.4000 -
C - 0.1400 -
C - 0.1300 -
C - 0.0900 -

Mechanical Properties of steel grade WDB620D

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)
292 (≥) 957 (≥) 31 43 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 212

Physical Properties of steel grade WDB620D

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
32 - -     0.42 -  
758 985 - 22.3 422   -  
829 - 42 43.2   224 141

Heat Treatment of steel grade WDB620D

Heat treated : 1175°C - 1129°C

Technological Curves of steel grade WDB620D

Cross Reference Table (Equivalent Grade) of WDB620D

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