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Italy UNI C140KU Hot rolled or forged finished steel products for tools. Special unalloyed steel qualities for cold working and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: C140KU / C 140 KU
Category Grade Standard Region/Area Standard Content
Metals C 140 KU UNI 2955-2 Italy Hot rolled or forged finished steel products for tools. Special unalloyed steel qualities for cold working

Chemical composition(mass fraction)(wt.%) of the C 140 KU

Element Min Max Similar
Si - 0.3000 -
S - 0.0200 -
P - 0.0200 -
Ni - 0.2500 -
Mn - 0.3500 -
Cu - 0.2500 -
Cr - 0.2000 -
C 1.3000 1.5000 -

Mechanical Properties of steel grade C 140 KU

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)
436 (≥) 647 (≥) 12 23 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 223

Physical Properties of steel grade C 140 KU

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
21 - -     0.14 -  
185 114 - 11.3 442   -  
852 - 21 41.2   344 221

Heat Treatment of steel grade C 140 KU

Heat treated : 1251°C - 1647°C

Technological Curves of steel grade C 140 KU

Cross Reference Table (Equivalent Grade) of C 140 KU

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