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A470 Grade D Class 8

America ASTM A470GradeDClass8 涡轮机转子和轴用经真空处理的碳素钢和合金锻件 and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals A470 Grade D Class 8 ASTM A470/A470M America 涡轮机转子和轴用经真空处理的碳素钢和合金锻件

Chemical composition(mass fraction)(wt.%) of the A470 Grade D Class 8

Element Min Max Similar
V 0.2000 0.3000 -
Si - 0.1000 -
S - 0.0150 -
P - 0.0120 -
Ni - 0.7500 -
Mo 1.0000 1.5000 -
Mn - 1.0000 -
Cr 1.0500 1.5000 -
C 0.2500 0.3500 -
Al - 0.0150 -

Mechanical Properties of steel grade A470 Grade D Class 8

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)
773 (≥) 764 (≥) 43 13 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade A470 Grade D Class 8

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
33 - -     0.13 -  
539 484 - 12.3 333   -  
253 - 23 43.2   213 314

Heat Treatment of steel grade A470 Grade D Class 8

Heat treated : 1589°C - 1862°C

Technological Curves of steel grade A470 Grade D Class 8

Cross Reference Table (Equivalent Grade) of A470 Grade D Class 8

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