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France AFNOR NF D2q Dispersoid steels for hot forging. Semi-finished products and bars and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: D2q / D 2q
Category Grade Standard Region/Area Standard Content
Metals D 2q NF A33-111 France Dispersoid steels for hot forging. Semi-finished products and bars

Chemical composition(mass fraction)(wt.%) of the D 2q

Element Min Max Similar
V+Nb 0.0800 0.2000 -
V 0.0800 0.2000 -
Si 0.1000 0.4000 -
S 0.0200 0.0400 -
P - 0.0350 -
Mn 1.0000 1.5000 -
C 0.3500 0.4500 -

Mechanical Properties of steel grade D 2q

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)
744 (≥) 977 (≥) 13 13 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 334

Physical Properties of steel grade D 2q

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
22 - -     0.21 -  
893 888 - 32.3 342   -  
692 - 21 31.2   143 333

Heat Treatment of steel grade D 2q

Heat treated : 1577°C - 1255°C

Technological Curves of steel grade D 2q

Cross Reference Table (Equivalent Grade) of D 2q

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