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HD620/750CPD+Z

China 宝钢Q/BQB HD620/750CPD+Z 连续热镀锌/锌铁合金镀层钢板及钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: HD620/750CPD+Z / HD620/750CPD+Z
Category Grade Standard Region/Area Standard Content
Metals HD620/750CPD+Z Q/BQB 420 China 连续热镀锌/锌铁合金镀层钢板及钢带

Chemical composition(mass fraction)(wt.%) of the HD620/750CPD+Z

Element Min Max Similar
Al - 2.0000 -
S - 0.0150 -
P - 0.0800 -
Mn - 2.2000 -
Si - 0.8000 -
C - 0.1800 -

Mechanical Properties of steel grade HD620/750CPD+Z

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)
487 (≥) 554 (≥) 33 11 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade HD620/750CPD+Z

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
14 - -     0.44 -  
784 398 - 44.3 311   -  
267 - 12 33.2   224 324

Heat Treatment of steel grade HD620/750CPD+Z

Heat treated : 1421°C - 1248°C

Technological Curves of steel grade HD620/750CPD+Z

Cross Reference Table (Equivalent Grade) of HD620/750CPD+Z

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