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Italy UNI C90KU 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: C90KU / C 90 KU
Category Grade Standard Region/Area Standard Content
Metals C 90 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 90 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 0.8500 0.9400 -

Mechanical Properties of steel grade C 90 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)
956 (≥) 296 (≥) 44 12 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade C 90 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
23 - -     0.43 -  
958 494 - 41.3 144   -  
255 - 42 13.2   232 244

Heat Treatment of steel grade C 90 KU

Heat treated : 1798°C - 1467°C

Technological Curves of steel grade C 90 KU

Cross Reference Table (Equivalent Grade) of C 90 KU

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