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X 8 NiCrAlTi 32 21

Germany DIN X8NiCrAlTi3221 Seamless circular tubes of austenitic steels for high temperature service; technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals X 8 NiCrAlTi 32 21 DIN 17459 Germany Seamless circular tubes of austenitic steels for high temperature service; technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the X 8 NiCrAlTi 32 21

Element Min Max Similar
Co - 0.5000 -
N - 0.0300 -
Cu - 0.5000 -
Ti 0.2500 0.6500 -
Al 0.2500 0.6500 -
Ni 30.0000 34.0000 -
Cr 19.0000 22.0000 -
P - 0.0150 -
S - 0.0100 -
Mn - 1.5000 -
Si - 0.7000 -
C 0.0500 0.1000 -
Ti 0.2500 0.6500 -
Si - 0.7000 -
S - 0.0100 -
P - 0.0150 -
Ni 30.0000 34.0000 -
Mn - 1.5000 -
Cu - 0.5000 -
Cr 19.0000 22.0000 -
Co - 0.5000 -
C 0.0500 0.1000 -
Al 0.2500 0.6500 -
Ti 0.2500 0.6500 -
Si - 0.7000 -
S - 0.0100 -
P - 0.0150 -
Ni 30.0000 34.0000 -
Mn - 1.5000 -
Cu - 0.5000 -
Cr 19.0000 22.0000 -
Co - 0.5000 -
C 0.0500 0.1000 -
Al 0.2500 0.6500 -
Ti 0.2500 0.6500 -
Si - 0.7000 -
S - 0.0100 -
P - 0.0150 -
Ni 30.0000 34.0000 -
N - 0.0300 -
Mn - 1.5000 -
Cu - 0.5000 -
Cr 19.0000 22.0000 -
Co - 0.5000 -
C 0.0500 0.1000 -
Al 0.2500 0.6500 -
Ti 0.2500 0.6500 -
Si - 0.7000 -
S - 0.0100 -
P - 0.0150 -
Ni 30.0000 34.0000 -
Mn - 1.5000 -
Cu - 0.5000 -
Cr 19.0000 22.0000 -
C 0.0500 0.1000 -
Al 0.2000 0.6500 -
Ti 0.2500 0.6500 -
Si - 0.7000 -
S - 0.0100 -
P - 0.0150 -
Ni 30.0000 34.0000 -
Mn - 1.5000 -
Cu - 0.5000 -
Cr 19.0000 22.0000 -
Co - 0.5000 -
C 0.0500 0.1000 -
Al 0.2500 0.6500 -

Mechanical Properties of steel grade X 8 NiCrAlTi 32 21

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)
669 (≥) 385 (≥) 32 41 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 313

Physical Properties of steel grade X 8 NiCrAlTi 32 21

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 - -     0.34 -  
441 531 - 21.3 344   -  
228 - 22 21.2   121 223

Heat Treatment of steel grade X 8 NiCrAlTi 32 21

Heat treated : 1968°C - 1676°C

Technological Curves of steel grade X 8 NiCrAlTi 32 21

Cross Reference Table (Equivalent Grade) of X 8 NiCrAlTi 32 21

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