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England B.S. 450EM Specification for weldable structural steels for fixed offshore structures and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 450EM / 450 EM
Category Grade Standard Region/Area Standard Content
Metals 450 EM BS 7191 England Specification for weldable structural steels for fixed offshore structures

Chemical composition(mass fraction)(wt.%) of the 450 EM

Element Min Max Similar

Mechanical Properties of steel grade 450 EM

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)
295 (≥) 376 (≥) 14 14 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade 450 EM

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
31 - -     0.42 -  
124 728 - 32.3 222   -  
867 - 42 14.2   411 421

Heat Treatment of steel grade 450 EM

Heat treated : 1247°C - 1849°C

Technological Curves of steel grade 450 EM

Cross Reference Table (Equivalent Grade) of 450 EM

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