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France AFNOR NF D3r Dispersoid steels for hot forging. Semi-finished products and bars and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: D3r / D 3r
Category Grade Standard Region/Area Standard Content
Metals D 3r NF A33-111 France Dispersoid steels for hot forging. Semi-finished products and bars

Chemical composition(mass fraction)(wt.%) of the D 3r

Element Min Max Similar

Mechanical Properties of steel grade D 3r

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)
555 (≥) 681 (≥) 42 23 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade D 3r

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
31 - -     0.34 -  
482 264 - 33.3 223   -  
225 - 23 21.2   113 241

Heat Treatment of steel grade D 3r

Heat treated : 1114°C - 1988°C

Technological Curves of steel grade D 3r

Cross Reference Table (Equivalent Grade) of D 3r

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