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France AFNOR NF Y55 Iron and steel. Carbon steels for cutlery and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Y55 / Y 55
Category Grade Standard Region/Area Standard Content
Metals Y 55 NF A35-596 France Iron and steel. Carbon steels for cutlery

Chemical composition(mass fraction)(wt.%) of the Y 55

Element Min Max Similar
Si 0.1500 0.4500 -
S - 0.0250 -
P - 0.0250 -
Mn 0.4000 0.7000 -
C 0.5000 0.5900 -

Mechanical Properties of steel grade Y 55

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)
133 (≥) 591 (≥) 22 31 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 112

Physical Properties of steel grade Y 55

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
21 - -     0.32 -  
853 324 - 11.3 242   -  
798 - 43 32.2   343 134

Heat Treatment of steel grade Y 55

Heat treated : 1944°C - 1684°C

Technological Curves of steel grade Y 55

Cross Reference Table (Equivalent Grade) of Y 55

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