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Australia AS U3 Railway track material - Dogspikes and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: U3 / U3
Category Grade Standard Region/Area Standard Content
Metals U3 AS/NZS 1085.8 Australia Railway track material - Dogspikes

Chemical composition(mass fraction)(wt.%) of the U3

Element Min Max Similar

Mechanical Properties of steel grade U3

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)
193 (≥) 732 (≥) 13 24 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade U3

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
43 - -     0.44 -  
331 785 - 22.3 331   -  
275 - 31 42.2   433 144

Heat Treatment of steel grade U3

Heat treated : 1198°C - 1132°C

Technological Curves of steel grade U3

Cross Reference Table (Equivalent Grade) of U3

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