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X 12 CrMo 9 1

Germany DIN X12CrMo91 Seamless circular steel tubes for hydrogen service at elevated temperatures and pressures; technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: X12CrMo91 / X 12 CrMo 9 1
Category Grade Standard Region/Area Standard Content
Metals X 12 CrMo 9 1 DIN 17176 Germany Seamless circular steel tubes for hydrogen service at elevated temperatures and pressures; technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the X 12 CrMo 9 1

Element Min Max Similar
Si 0.2500 1.0000 -
S - 0.0200 -
P - 0.0250 -
Mo 0.9000 1.1000 -
Mn 0.3000 0.6000 -
Cr 8.0000 10.0000 -
C 0.0700 0.1500 -

Mechanical Properties of steel grade X 12 CrMo 9 1

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)
171 (≥) 295 (≥) 32 13 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical Properties of steel grade X 12 CrMo 9 1

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
33 - -     0.21 -  
524 785 - 31.3 121   -  
829 - 22 34.2   334 433

Heat Treatment of steel grade X 12 CrMo 9 1

Heat treated : 1972°C - 1762°C

Technological Curves of steel grade X 12 CrMo 9 1

Cross Reference Table (Equivalent Grade) of X 12 CrMo 9 1

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