Реферат: Механические свойства элементов Периодической системы Менделеева

Shear Strength 400 MPa Average value for W blanks

Tungsten (drawn wire)

Hardness, Brinell 444 Converted from Vickers for 3000 kg load/10 mm ball Brinell test Drawn and annealed

Hardness, Knoop 505 Estimated from Vickers,

Hardness, Rockwell A 74 Drawn and annealed

Hardness, Rockwell C 47 Drawn and annealed

Hardness, Vickers 480 Drawn and annealed

Tensile Strength, Yield 450 MPa

Rhenium (Annealed)

Hardness, Brinell 165 Converted from Vickers for 3000 kg load/10 mm ball Brinell test

Hardness, Rockwell A 52 Converted from Vickers

Hardness, Rockwell B 85 Converted from Vickers

Hardness, Rockwell C 3 Value below normal HRC range, for comparison only

Hardness, Vickers 170

Tensile Strength, Ultimate 1070 MPa Value at 800°C is 620 MPa, Value at 1200°C is 410 MPa

Tensile Strength, Yield 290 MPa

Elongation at Break 15–25%

Modulus of Elasticity 469 GPa

Poisson's Ratio 0,296

Shear Modulus 176 GPa

Rhenium (Deformed)

Hardness, Brinell 500 Converted from Vickers for 3000 kg load/10 mm ball Brinell test

Hardness, Rockwell A 76 Converted from Vickers

Hardness, Rockwell C 50 Converted from Vickers

Hardness, Vickers 550 15% Cold-Worked

Tensile Strength, Ultimate 2100 MPa

Elongation at Break 1–3%

Modulus of Elasticity 460 GPa

Osmium (Annealed)

Hardness, Brinell 293 Converted from Vickers for 3000 kg load/10 mm ball Brinell test

Hardness, Rockwell A 66 Converted from Vickers

Hardness, Rockwell C 30 Converted from Vickers

Hardness, Vickers 300