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X 21 Cr 13 KU

Italy UNI X21Cr13KU Hot rolled or forged finished steel products for tools. Special alloyed steel qualities for cold working and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: X21Cr13KU / X 21 Cr 13 KU
Category Grade Standard Region/Area Standard Content
Metals X 21 Cr 13 KU UNI 2955-3 Italy Hot rolled or forged finished steel products for tools. Special alloyed steel qualities for cold working

Chemical composition(mass fraction)(wt.%) of the X 21 Cr 13 KU

Element Min Max Similar

Mechanical Properties of steel grade X 21 Cr 13 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)
671 (≥) 451 (≥) 22 42 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 222

Physical Properties of steel grade X 21 Cr 13 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
11 - -     0.42 -  
211 765 - 34.3 232   -  
499 - 21 22.2   344 234

Heat Treatment of steel grade X 21 Cr 13 KU

Heat treated : 1198°C - 1122°C

Technological Curves of steel grade X 21 Cr 13 KU

Cross Reference Table (Equivalent Grade) of X 21 Cr 13 KU

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