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TU E 250 B

France AFNOR NF TUE250B Steel tubes. Seamless plain-end unalloyed steel tubes for fluid piping at elevated temperatures. Dimensions. Technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: TUE250B / TU E 250 B
Category Grade Standard Region/Area Standard Content
Metals TU E 250 B NF A49-211 France Steel tubes. Seamless plain-end unalloyed steel tubes for fluid piping at elevated temperatures. Dimensions. Technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the TU E 250 B

Element Min Max Similar
Si - 0.3500 -
S - 0.0250 -
P - 0.0250 -
Mn - 1.0000 -
C - 0.2100 -

Mechanical Properties of steel grade TU E 250 B

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)
774 (≥) 927 (≥) 23 41 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade TU E 250 B

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
32 - -     0.33 -  
887 166 - 42.3 114   -  
941 - 34 14.2   341 412

Heat Treatment of steel grade TU E 250 B

Heat treated : 1224°C - 1398°C

Technological Curves of steel grade TU E 250 B

Cross Reference Table (Equivalent Grade) of TU E 250 B

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