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Grade DH40

China 鞍钢Q/ASB GradeDH40 船舶及海洋工程用结构钢板及钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: GradeDH40 / Grade DH40
Category Grade Standard Region/Area Standard Content
Metals Grade DH40 Q/ASB 141 China 船舶及海洋工程用结构钢板及钢带

Chemical composition(mass fraction)(wt.%) of the Grade DH40

Element Min Max Similar
Ceq - 0.4200 -
Ceq - 0.4000 -
Al 0.0150 0.0550 -
Mo - 0.0800 -
Ti - 0.0200 -
V - 0.1000 -
Nb 0.0200 0.0500 -
Ni - 0.4000 -
Cr - 0.2000 -
Cu - 0.3000 -
S - 0.0250 -
P - 0.0250 -
Mn 0.9000 1.6000 -
Si - 0.5000 -
C - 0.1800 -

Mechanical Properties of steel grade Grade DH40

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)
526 (≥) 792 (≥) 14 14 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade Grade DH40

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
24 - -     0.13 -  
144 296 - 21.3 332   -  
569 - 34 13.2   144 143

Heat Treatment of steel grade Grade DH40

Heat treated : 1571°C - 1584°C

Technological Curves of steel grade Grade DH40

Cross Reference Table (Equivalent Grade) of Grade DH40

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