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Italy UNI C70KU 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: C70KU / C 70 KU
Category Grade Standard Region/Area Standard Content
Metals C 70 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 70 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 0.6500 0.7400 -

Mechanical Properties of steel grade C 70 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)
743 (≥) 114 (≥) 24 32 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 222

Physical Properties of steel grade C 70 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
12 - -     0.42 -  
498 672 - 44.3 313   -  
616 - 33 24.2   332 423

Heat Treatment of steel grade C 70 KU

Heat treated : 1416°C - 1341°C

Technological Curves of steel grade C 70 KU

Cross Reference Table (Equivalent Grade) of C 70 KU

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