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A 550 FP1

France AFNOR NF A550FP1 Steel products. Fine grain weldable steels for the transportation of dangerous products. Technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A550FP1 / A 550 FP1
Category Grade Standard Region/Area Standard Content
Metals A 550 FP1 NF A36-215 France Steel products. Fine grain weldable steels for the transportation of dangerous products. Technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the A 550 FP1

Element Min Max Similar
V - 0.1000 -
Si - 0.5000 -
S - 0.0100 -
P - 0.0250 -
Ni 0.2000 0.7000 -
Nb - 0.0500 -
Mo - 0.1000 -
Mn 1.0000 1.7000 -
Cu - 0.1800 -
Cr - 0.2500 -
C 0.1000 0.2000 -
Al 0.0200 - -

Mechanical Properties of steel grade A 550 FP1

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)
668 (≥) 238 (≥) 24 42 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade A 550 FP1

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
41 - -     0.44 -  
555 863 - 42.3 133   -  
667 - 42 43.2   111 113

Heat Treatment of steel grade A 550 FP1

Heat treated : 1522°C - 1546°C

Technological Curves of steel grade A 550 FP1

Cross Reference Table (Equivalent Grade) of A 550 FP1

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