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X 12 CrCoNi 21-20

Germany DIN X12CrCoNi21-20 Stainless steels. List of stainless steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: X12CrCoNi21-20 / X 12 CrCoNi 21-20
Category Grade Standard Region/Area Standard Content
Metals X 12 CrCoNi 21-20 DIN EN 10088-1 Germany Stainless steels. List of stainless steels

Chemical composition(mass fraction)(wt.%) of the X 12 CrCoNi 21-20

Element Min Max Similar
Co 18.5000 21.0000 -
W 2.0000 3.0000 -
Ni 19.0000 21.0000 -
Nb 0.7500 1.2500 -
Mo 2.5000 3.5000 -
Cr 20.0000 22.5000 -
N 0.1000 0.2000 -
S - 0.0150 -
P - 0.0350 -
Mn - 2.0000 -
Si - 1.0000 -
C 0.0800 0.1600 -
W 2.0000 3.0000 -
Si - 1.0000 -
S - 0.0300 -
P - 0.0450 -
Ni 19.0000 21.0000 -
Nb 0.7500 1.2500 -
N 0.1000 0.2000 -
Mo 2.5000 3.5000 -
Mn - 2.0000 -
Cr 20.0000 22.5000 -
Co 18.5000 21.0000 -
C 0.0800 0.1600 -
V 2.0000 3.0000 -
Si - 1.0000 -
S - 0.0150 -
P - 0.0350 -
Ni 19.0000 21.0000 -
Nb 0.7500 1.2500 -
N 0.1000 0.2000 -
Mo 2.5000 3.5000 -
Mn - 2.0000 -
Cr 20.0000 22.5000 -
Co 18.5000 21.0000 -
C 0.0800 0.1600 -

Mechanical Properties of steel grade X 12 CrCoNi 21-20

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)
482 (≥) 321 (≥) 21 14 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade X 12 CrCoNi 21-20

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
13 - -     0.22 -  
363 529 - 44.3 132   -  
529 - 23 43.2   432 142

Heat Treatment of steel grade X 12 CrCoNi 21-20

Heat treated : 1139°C - 1921°C

Technological Curves of steel grade X 12 CrCoNi 21-20

Cross Reference Table (Equivalent Grade) of X 12 CrCoNi 21-20

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