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St 14 Cu3

Germany DIN St14Cu3 Materials for rail vehicles - Steels - Part 2: Unalloyed steels for cold rolled flat products less than 3 mm thickness; selected standard and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: St14Cu3 / St 14 Cu3
Category Grade Standard Region/Area Standard Content
Metals St 14 Cu3 DIN 5512-2 Germany Materials for rail vehicles - Steels - Part 2: Unalloyed steels for cold rolled flat products less than 3 mm thickness; selected standard

Chemical composition(mass fraction)(wt.%) of the St 14 Cu3

Element Min Max Similar
Si 0.0300 0.1000 -
S - 0.0250 -
P - 0.0250 -
N - 0.0070 -
Mn - 0.4000 -
Cu 0.2500 0.3500 -
C - 0.0800 -
Al 0.0200 - -

Mechanical Properties of steel grade St 14 Cu3

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)
869 (≥) 647 (≥) 42 31 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade St 14 Cu3

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 - -     0.42 -  
137 329 - 34.3 134   -  
331 - 14 21.2   321 233

Heat Treatment of steel grade St 14 Cu3

Heat treated : 1438°C - 1483°C

Technological Curves of steel grade St 14 Cu3

Cross Reference Table (Equivalent Grade) of St 14 Cu3

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