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America SAE D550 Automotive ductile (nodular) iron castings and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: D550 / D550
Category Grade Standard Region/Area Standard Content
Metals D550 SAE J 434 America Automotive ductile (nodular) iron castings

Chemical composition(mass fraction)(wt.%) of the D550

Element Min Max Similar

Mechanical Properties of steel grade D550

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)
575 (≥) 985 (≥) 41 34 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade D550

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
12 - -     0.41 -  
864 558 - 11.3 141   -  
531 - 32 43.2   331 112

Heat Treatment of steel grade D550

Heat treated : 1184°C - 1391°C

Technological Curves of steel grade D550

Cross Reference Table (Equivalent Grade) of D550

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