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Propriétés de l’acier de constructionMaterial coefficients of structural steelWerkstoffkennwerte von Baustahl acoefficient de dilatationthermique acoefficient of linearthermal expansion aTemperaturdehnzahl a = 12 . 10 -6 °C -1E a module d’élasticité E a modulus of elasticity E a ElastizitätsmodulE a = 210000 N/mm 2 = 210000 MPa = 210 kN/mm 2 = 21000 kN/cm 2 = 210000 MN/m 2G a module de cisaillement G a shear modulus G a SchubmodulGa =Ea2 (1+ a )G a ≅ 81000 N/mm 2 = 81000 MPa = 81 kN/mm 2 = 8100 kN/cm 2 = 81000 MN/m 2 a coefficient de Poisson a Poisson’s ratio a Poisson’sche Zahl a = 0,3 a masse volumique a unit mass a Dichte a = 7850 kg/m 3225

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