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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
Elongation at Break 34%
Modulus of Elasticity 73,1 GPa
Compressive Yield Strength 200 MPa Approximately equal to tensile
Bulk Modulus 57,7 GPa
Poisson's Ratio 0,27
Fatigue Strength 97 MPa reversed bend test endurance limit
Shear Modulus 28 GPa

Protactinium
Bulk Modulus 157 GPa

Uranium (Cast)
Hardness, Brinell 185 Converted from Vickers for 3000 kg load/10 mm ball
Brinell test Unspecified heat treatment
Hardness, Rockwell A 55 Unspecified heat treatment
Hardness, Rockwell B 90 Unspecified heat treatment
Hardness, Rockwell C 10 Unspecified heat treatment
Hardness, Vickers 190 Unspecified heat treatment
Tensile Strength, Ultimate 400 MPa
Tensile Strength, Yield 200 MPa
Elongation at Break 4%
Modulus of Elasticity 190 GPa
Poisson's Ratio 0,22
Shear Modulus 86 GPa Calculated

Uranium (Beta-Annealed)
Tensile Strength, Ultimate 615 MPa

Uranium (Wrought ? Phase)
Tensile Strength, Ultimate 1150 MPa
Tensile Strength, Yield 740 MPa
Elongation at Break 14%

Neptunium
Hardness, Vickers 346
Bulk Modulus 118 GPa
Shear Modulus 80 GPa

Plutonium
Hardness, Brinell 242 Converted from Vickers for 3000 kg load/10 mm ball
Brinell test
Hardness, Rockwell A 62
Hardness, Rockwell C 22
Hardness, Vickers 250
Tensile Strength, Ultimate 400 MPa Cast ?
Tensile Strength, Yield 275 MPa Cast ?
Elongation at Break 0,2–0,5% Cast ?
Modulus of Elasticity 96,5 GPa Cast
Compressive Yield Strength 415 MPa
Ultimate Compressive Strength 830 MPa
Poisson's Ratio 0,15–0,21
Fatigue Strength 90 MPa 100,000,000 cycles, rotating beam
Shear Modulus 45 GPa

Americium
Bulk Modulus 45 GPa

Curium
Bulk Modulus 37 GPa

Berkelium
Bulk Modulus 52 GPa

Californium
Bulk Modulus 50 GPa

Einsteinium
Bulk Modulus 15 GPa Estimated

Fermium
Bulk Modulus 15 GPa Estimated

Mineral Hardness (by Mohs) from

Г. В. Самсонов. Справочник "Свойства элементов".В 2 т. Москва, 1976 г.

|Symb|Mohs|
|ol |HM |
|Li |0,6 |
|Be |5,5 |
|B |9,3 |
|Diam|10 |
|ond | |
|(С) | |
|Na |0,5 |
|Mg |2,5 |
|Al |2,75|
|Si |6,5 |
|S |2 |
|K |0,4 |
|Ca |1,75|
|Ti |6 |
|V |7 |
|Cr |8,5 |
|Symb|Mohs|
|ol |HM |
|Mn |6 |
|Fe |4 |
|Co |5 |
|Ni |4 |
|Cu |3 |
|Zn |2,5 |
|Ga |1,5 |
|Ge |6 |
|As |3,5 |
|Se |2 |
|Rb |0,3 |
|Sr |1,5 |
|Zr |5 |
|Nb |6 |
|Mo |5,5 |
|Ru |6,5 |
|Rh |6 |
|Pd |4,75|
|Ag |2,5 |
|Cd |2 |
|In |1,2 |
|Sn |1,5 |
|Sb |3 |
|Te |2,25|
|Cs |0,2 |
|Ba |1,25|
|La |2,5 |
|Ce |2,5 |
|Hf |5,5 |
|Ta |6,5 |
|W |7,5 |
|Re |7 |
|Os |7 |
|Ir |6,5 |
|Pt |3,5 |
|Au |2,5 |
|Tl |1,2 |
|Pb |1,5 |
|Bi |2,25|
|Th |3 |
|U |6 |

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