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France AFNOR NF P235B Pressure vessels. Seamless steel gas vessels. Types of steels. Semi finished products and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: P235B / P 235 B
Category Grade Standard Region/Area Standard Content
Metals P 235 B NF A49-900 France Pressure vessels. Seamless steel gas vessels. Types of steels. Semi finished products

Chemical composition(mass fraction)(wt.%) of the P 235 B

Element Min Max Similar
Si - 0.4000 -
S - 0.0150 -
P - 0.0200 -
Ni - 0.4000 -
Mo - 0.1000 -
Mn 0.5000 0.8000 -
Cr+Mo+Ni - 0.6300 -
Cr - 0.4000 -
C 0.1500 0.2100 -

Mechanical Properties of steel grade P 235 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)
263 (≥) 646 (≥) 23 13 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical Properties of steel grade P 235 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
24 - -     0.12 -  
293 957 - 14.3 444   -  
469 - 24 42.2   342 143

Heat Treatment of steel grade P 235 B

Heat treated : 1155°C - 1481°C

Technological Curves of steel grade P 235 B

Cross Reference Table (Equivalent Grade) of P 235 B

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