Реферат: Механические свойства элементов Периодической системы Менделеева

Hardness, Rockwell B 49 Estimated from Vickers,

Hardness, Vickers 90

Tensile Strength, Ultimate 205–240 MPa

Elongation at Break 1–3% in 50 mm

Modulus of Elasticity 156 GPa static in tension

Shear Modulus 56 GPa Calculated value

Platinum (Thermocouple Quality, Annealed)

Tensile Strength, Ultimate 143 MPa

Gold

Hardness, Vickers 25

Tensile Strength, Ultimate 120 MPa Annealed

Elongation at Break 30%

Modulus of Elasticity 77,2 GPa 60% Cold Worked

Poisson's Ratio 0,42

Shear Modulus 32 GPa 60% Cold Worked; Calculated Value

Thallium

Hardness, Brinell 2

Hardness, Vickers 2

Tensile Strength, Ultimate 7,5 MPa

Elongation at Break 40% in 125 mm

Lead

Hardness, Brinell 4,2 Cast

Hardness, Vickers 5

Tensile Strength, Ultimate 18 MPa

Modulus of Elasticity 14 GPa

Poisson's Ratio 0,42

Bismuth

Hardness, Brinell 7

Modulus of Elasticity 31,7 GPa

Poisson's Ratio 0,33

Shear Modulus 14 GPa Calculated

Thorium

Hardness, Vickers 35–114 References report a wide range of values

Tensile Strength, Ultimate 200 MPa

Tensile Strength, Yield 144 MPa 0,2% offset