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Italy UNI Fe490-2 Hollow unalloyed quality steel bars for machining and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Fe490-2 / Fe 490-2
Category Grade Standard Region/Area Standard Content
Metals Fe 490-2 UNI 7730 Italy Hollow unalloyed quality steel bars for machining

Chemical composition(mass fraction)(wt.%) of the Fe 490-2

Element Min Max Similar
Si 0.1500 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mn 0.5000 0.8000 -
C 0.3200 0.3900 -

Mechanical Properties of steel grade Fe 490-2

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)
368 (≥) 985 (≥) 34 21 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade Fe 490-2

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
14 - -     0.24 -  
874 737 - 24.3 244   -  
823 - 24 23.2   341 444

Heat Treatment of steel grade Fe 490-2

Heat treated : 1167°C - 1431°C

Technological Curves of steel grade Fe 490-2

Cross Reference Table (Equivalent Grade) of Fe 490-2

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