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Germany DIN FD Round steel wire for springs; oil quenched and tempered carbon and alloy steel wire; technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: FD / FD
Category Grade Standard Region/Area Standard Content
Metals FD DIN 17223-2 Germany Round steel wire for springs; oil quenched and tempered carbon and alloy steel wire; technical delivery conditions

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

Element Min Max Similar
Si 0.1000 0.3000 -
S - 0.0250 -
P - 0.0300 -
Mn 0.5000 - -
Cu - 0.1200 -
C 0.6000 0.7500 -

Mechanical Properties of steel grade FD

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)
178 (≥) 292 (≥) 14 33 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade FD

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
44 - -     0.42 -  
521 551 - 24.3 434   -  
735 - 31 21.2   112 243

Heat Treatment of steel grade FD

Heat treated : 1813°C - 1592°C

Technological Curves of steel grade FD

Cross Reference Table (Equivalent Grade) of FD

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