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France AFNOR NF P525B Pressure vessels. Seamless steel gas vessels. Types of steels. Semi finished products and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: P525B / P 525 B
Category Grade Standard Region/Area Standard Content
Metals P 525 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 525 B

Element Min Max Similar
V 0.1100 0.2100 -
Si 0.2000 0.5000 -
S - 0.0150 -
P - 0.0200 -
Ni - 0.4000 -
Mo - 0.1000 -
Mn 1.5000 1.8000 -
Cr+Mo+Ni - 0.6300 -
Cr - 0.4000 -
C 0.1900 0.2500 -

Mechanical Properties of steel grade P 525 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)
447 (≥) 996 (≥) 24 31 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical Properties of steel grade P 525 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
11 - -     0.13 -  
574 345 - 12.3 233   -  
171 - 21 44.2   444 132

Heat Treatment of steel grade P 525 B

Heat treated : 1341°C - 1822°C

Technological Curves of steel grade P 525 B

Cross Reference Table (Equivalent Grade) of P 525 B

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