Механические свойства элементов Периодической системы Менделеева

Mechanical Properties Of Elements from http://matweb.com/.





Lithium

Hardness, Vickers Max 5

Tensile Strength, Ultimate Max 15 MPa



Beryllium

Hardness, Rockwell B 75–85

Tensile Strength, Ultimate 370 MPa

Tensile Strength, Yield 240 MPa

Elongation at Break 3%

Modulus of Elasticity 303 GPa

Compressive Yield Strength 270 MPa  Yield at 0,2% offset (10% higher than tensile yield strength) 

Poisson's Ratio 0,07–0,18  values between 0,07 and 0,18 have been reported for beryllium 

Charpy Impact 1,5–5,5 J (1,11–4,06 ft-lb)  Notch status unknown 

Fatigue Strength 160 MPa 107 cycles; Kt=3,07 and R = 0,1 

Fatigue Strength 240 MPa 104 cycles; Kt=3,07 and R = 0,1 

Fatigue Strength 240 MPa smooth; 107 cycles (=yield strength) 

Fracture Toughness 10,6–12,3 MPa-mЅ   KIC for hot-pressed structural grades 

Shear Modulus 135 GPa 

Shear Strength 345 MPa hot-pressed block 

Shear Strength 480 MPa cross-rolled sheet



Boron (Crystalline)

Knoop Microhardness 99,9% pure is 3300 (100 g load)

9,3 Mohs

Tensile Strength, Ultimate 2,6–3,1 MPa

Compressive Yield Strength Max 0,5 MPa   B2O3 inclusions

Boron (Amorphous)

Tensile Strength, Ultimate 1,6–2,4 MPa

Modulus of Elasticity 0,44 GPa in tension 



Diamond (С)

Hardness, Knoop 8000

Knoop Microhardness 56–102 (001) face 

Knoop Microhardness 58–88 (110),(111) faces 

Knoop Microhardness 79 GPa 

Vickers Microhardness 88–147 in GPa; (001) face 

Vickers Microhardness 98 in GPa; (111) face 

Hardness, Mohs 10 

Abrasive Hardness 140000 

Modulus of Elasticity 700–1200 GPa 

Compressive Yield Strength 8680–16530 MPa

Poisson's Ratio 0,1–0,29

Fracture Toughness 3,4 MPa-mЅ



Sodium

Hardness, Vickers 0,1

Tensile Strength, Ultimate Max 10 MPa 



Magnesium (Annealed Sheet)

Hardness, Brinell 40 500 kg load/10 mm ball 

Tensile Strength, Ultimate 160–196 MPa 

Tensile Strength, Yield 90–105 MPa 

Elongation at Break 3–15%   

Modulus of Elasticity 44 GPa 

Compressive Yield Strength 69–83 MPa 

Poisson's Ratio 0,35  

Shear Modulus 19 GPa Calculated 

Coefficient of Friction 0,36 versus magnesium at 20°C 

Magnesium (Hard-Rolled Sheet)

Hardness, Brinell 46  500 kg load/10 mm ball 

Tensile Strength, Ultimate 180–220 MPa

Tensile Strength, Yield 115–140 MPa

Elongation at Break 2–10%

Compressive Yield Strength 105–115 MPa

Magnesium (Extruded)

Hardness, Brinell 35  500 kg load/10 mm ball 

Tensile Strength, Ultimate 165–205 MPa

Tensile Strength, Yield 69–105 MPa

Elongation at Break 5–8%

Compressive Yield Strength 34–55 MPa

Magnesium (Sand Cast)

Hardness, Brinell 30  500 kg load/10 mm ball 

Tensile Strength, Ultimate 90 MPa

Tensile Strength, Yield 21 MPa

Elongation at Break 2–6%

Compressive Yield Strength 21 MPa



Aluminum

Hardness, Vickers 15 Annealed 

Modulus of Elasticity 68 GPa

Shear Modulus 25 GPa



Silicon

Knoop Microhardness 11270 N/mm2

Modulus of Elasticity 112,4 GPa

Compressive Yield Strength 120 MPa

Bulk Modulus 98,74 GPa

Poisson's Ratio 0,28   

Shear Modulus 49 GPa Calculated 



Calcium (Annealed)

Hardness, Brinell 17

Tensile Strength, Ultimate 40 MPa

Tensile Strength, Yield 13,7 MPa

Elongation at Break 52%

Modulus of Elasticity 23,4 GPa

Bulk Modulus 15,2 GPa

Poisson's Ratio 0,31    

Shear Modulus 7,38 GPa

Calcium (Rolled)

Hardness, Vickers 17 Unknown Heat Treatment 

Tensile Strength, Ultimate 110 MPa

Tensile Strength, Yield 84,8 MPa

Elongation at Break 7%



Scandium

Hardness, Vickers 132 (0001) face 

Hardness, Vickers 36 (0101) face 

Tensile Strength, Ultimate 255 MPa

Tensile Strength, Yield 173 MPa

Elongation at Break 5%  

Modulus of Elasticity 74,4 GPa in tension 

Bulk Modulus 56,6 GPa

Poisson's Ratio 0,279

Shear Modulus 29,1 GPa



Titanium

Hardness, Brinell 70 electrolytic Ti 

Hardness, Vickers 60 

Tensile Strength, Ultimate 220 MPa

Tensile Strength, Yield 140 MPa

Elongation at Break 54%

Modulus of Elasticity 116 GPa

Poisson's Ratio 0,34



Vanadium (Vacuum Annealed Sheet)

Hardness, Brinell 137 Converted from Rockwell B, (500 kg load) 

Hardness, Knoop 173 Converted from Rockwell B 

Hardness, Rockwell A 51,1 Converted from Rockwell B 

Hardness, Rockwell B 83

Hardness, Vickers 159 Converted from Rockwell B 

Tensile Strength, Ultimate 536 MPa 

Tensile Strength, Yield 454 MPa

Elongation at Break 20% in 50 mm 

Modulus of Elasticity 125,5 GPa

Poisson's Ratio 0,36

Shear Modulus 46,4 GPa

Vanadium (Cold Rolled)

Hardness, Brinell 165 Converted from Vickers, (3000 kg load) 

Hardness, Rockwell A 52 Converted from Vickers 

Hardness, Rockwell B 100   

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

Hardness, Vickers 170

Tensile Strength, Ultimate 800 MPa

Tensile Strength, Yield 776 MPa

Elongation at Break 2% in 50 mm

Vanadium (Hot Rolled Bar)

Hardness, Brinell 142 Converted from Rockwell B, (500 kg load) 

Hardness, Knoop 180 Converted from Rockwell B 

Hardness, Rockwell A 52,3 Converted from Rockwell B 

Hardness, Rockwell B 85   

Hardness, Vickers 165 Converted from Rockwell B 

Tensile Strength, Ultimate 472 MPa

Tensile Strength, Yield 439 MPa

Elongation at Break 27% in 50 mm

Vanadium (Vacuum Annealed Wire)

Hardness, Brinell 126 Converted from Rockwell A (500 kg load) 

Hardness, Knoop 158 Converted from Rockwell A 

Hardness, Rockwell A 48

Hardness, Rockwell B 78 Converted from Rockwell A 

Hardness, Vickers 141 Converted from Rockwell A 

Tensile Strength, Ultimate 538 MPa

Tensile Strength, Yield 463 MPa 

Elongation at Break 25% in 50 mm

Vanadium (Cold Drawn Wire)

Hardness, Brinell 151 Converted from Rockwell A, (500 kg load) 

Hardness, Knoop 192 Converted from Rockwell A 

Hardness, Rockwell A 54

Hardness, Rockwell B 88 Converted from Rockwell A 

Hardness, Vickers 176 Converted from Rockwell A 

Tensile Strength, Ultimate 911 MPa

Tensile Strength, Yield 765 MPa

Elongation at Break 6,8% in 50 mm



Chromium (Annealed)

Hardness, Brinell 80 Converted from Vickers for 500 kg load/10 mm ball Brinell test 

Hardness, Knoop 102 Converted from Vickers 

Hardness, Rockwell B 48  Converted from Vickers 

Hardness, Vickers 90 

Charpy Impact, Unnotched 2 J (1,48 ft-lb)  Unspecified Heat Treatment 

Chromium (Recrystallized)

Tensile Strength, Ultimate 282 MPa

Elongation at Break 0%   

Modulus of Elasticity 248 GPa

Chromium (As-Swaged)

Hardness, Brinell 125   

Hardness, Knoop 144  Converted from Brinell 

Hardness, Rockwell B 72  Converted from Brinell 

Hardness, Vickers 131 Converted from Brinell 

Tensile Strength, Ultimate 413 MPa

Tensile Strength, Yield 362 MPa

Elongation at Break 44%



Manganese

Hardness, Brinell 460 Converted from Vickers for 3000 kg load/10 mm ball Brinell test 

Hardness, Rockwell A 75 Converted from Vickers 

Hardness, Rockwell C 48 Converted from Vickers 

Hardness, Vickers 500 

Tensile Strength, Ultimate 496 MPa γ-Phase 

Tensile Strength, Yield 241 MPa γ-Phase 

Modulus of Elasticity 159 GPa

Bulk Modulus 92,6 GPa

Poisson's Ratio 0,35    

Shear Modulus 76,4 GPa



Iron

Hardness, Brinell 146 Converted from Vickers for 3000 kg load/10 mm ball Brinell test 

Hardness, Rockwell A 49 

Hardness, Rockwell B 79 

Hardness, Vickers 150 

Tensile Strength, Yield 50 MPa 0,5% strain; after zone refining 

Modulus of Elasticity 200 GPa

Bulk Modulus 166 GPa

Poisson's Ratio 0,291 

Shear Modulus 87 GPa Calculated 



Cobalt

Hardness, Brinell 125   

Hardness, Vickers 253   

Tensile Strength, Yield 225 MPa

Modulus of Elasticity 211 GPa

Poisson's Ratio 0,32

Shear Modulus 82,6 GPa



Nickel (Annealed)

Hardness, Vickers 75

Tensile Strength, Ultimate 45 MPa

Modulus of Elasticity 207 GPa

Poisson's Ratio 0,31

Shear Modulus 76 GPa

Nickel (Typical)

Tensile Strength, Ultimate 317 MPa

Tensile Strength, Yield 59 MPa

Elongation at Break 30%

Shear Modulus 76 GPa



Copper (Annealed)

Hardness, Vickers 50

Tensile Strength, Ultimate 210 MPa

Tensile Strength, Yield 33,3 MPa

Elongation at Break 60%

Modulus of Elasticity 110 GPa

Bulk Modulus 140 GPa

Poisson's Ratio 0,343

Shear Modulus 46 GPa

Copper (Cold-Worked)

Hardness, Brinell 89  Converted from Vickers for 500 kg load/10 mm ball Brinell test 

Hardness, Rockwell A 35 

Hardness, Rockwell B 51 

Hardness, Vickers 100

Bulk Modulus 140 GPa

Poisson's Ratio 0,35

Copper (Cold Drawn)

Hardness, Rockwell B 37

Tensile Strength, Ultimate 344 MPa

Tensile Strength, Yield 333,4 MPa

Elongation at Break 14%

Bulk Modulus 140 GPa

Poisson's Ratio 0,364 



Zinc

Hardness, Vickers 30

Tensile Strength, Ultimate 37 MPa cast sample 

Modulus of Elasticity 96,5 GPa



Gallium

Hardness, Vickers 50



Germanium

Knoop Microhardness 7644 N/mm2

Modulus of Elasticity 130 GPa Average of three axes 

Poisson's Ratio 0,3 Calculated 

Shear Modulus 50 GPa Average of three axes 



Selenium

Knoop Microhardness 350 N/mm2 Gray Selenium 

Modulus of Elasticity 57,9 GPa

Shear Modulus 6,46 GPa



Rubidium

Modulus of Elasticity 2,35 GPa



Strontium

Bulk Modulus 11,61 GPa



Yttrium

Hardness, Vickers 40 highly anisotropic 

Tensile Strength, Ultimate 150 MPa

Tensile Strength, Yield 67 MPa

Elongation at Break 34% in 25 mm

Modulus of Elasticity 63,5 GPa

Bulk Modulus 41,2 GPa

Poisson's Ratio 0,243

Shear Modulus 25,6 GPa



Zirconium

Hardness, Brinell 145 Converted from Vickers for 3000 kg load/10 mm ball, Annealed sample 

Hardness, Rockwell A 49 annealed sample 

Hardness, Rockwell B 78 Annealed sample 

Hardness, Vickers 150  annealed sample 

Tensile Strength, Ultimate 330 MPa Annealed 

Tensile Strength, Yield 230 MPa Annealed 

Elongation at Break 32% Annealed 

Modulus of Elasticity 94,5 GPa 

Poisson's Ratio 0,34

Shear Modulus 40 GPa Calculated



Niobium (Columbium) (Annealed Sample)

Hardness, Vickers 80

Tensile Strength, Ultimate 300 MPa

Tensile Strength, Yield 207 MPa

Elongation at Break 30%

Modulus of Elasticity 103 GPa

Poisson's Ratio 0,38   

Shear Modulus 37,5 GPa

Niobium (Columbium) (Cold-Worked)

Hardness, Brinell 126  Converted from Vickers for 3000 kg load/10 mm ball Brinell test 

Hardness, Rockwell A 45 

Hardness, Rockwell B 71 

Hardness, Vickers 130 

Tensile Strength, Ultimate 600 MPa

Niobium (Columbium) (Wrought)

Hardness, Brinell 152  Converted from Vickers for 3000 kg load/10 mm ball Brinell test 

Hardness, Knoop 175 

Hardness, Rockwell B 81,7 

Hardness, Vickers 160

Tensile Strength, Ultimate 585 MPa

Elongation at Break 5%



Molybdenum (Annealed)

Hardness, Brinell 225 Converted from Vickers for 3000 kg load/10 mm ball Brinell test

Hardness, Rockwell A 60  Converted from Vickers

Hardness, Rockwell B 98  Converted from Vickers

Hardness, Rockwell C 19  Converted from Vickers

Hardness, Vickers 230

Tensile Strength, Ultimate 324 MPa

Tensile Strength, Ultimate 350 MPa Single crystal 

Modulus of Elasticity 330 GPa;  275 GPa at 1000°C 

Compressive Yield Strength 400 MPa 0,01% Yield 

Bulk Modulus 272 GPa 

Shear Modulus 120 GPa 

Shear Strength 500 MPa torsional strain rate 0,25/sec 

Molybdenum (Recrystallized)

Tensile Strength, Ultimate 415 MPa

Tensile Strength, Yield 300 MPa 0,2% Offset 

Elongation at Break Max 40% in 50 mm 

Molybdenum (Stress Relieved Condition)

Tensile Strength, Ultimate 515 MPa

Tensile Strength, Yield 415 MPa  0,2% Offset 

Elongation at Break 2–17% in 50 mm 



Technetium (Annealed)

Hardness, Brinell 112

Hardness, Vickers 151

Tensile Strength, Ultimate 800 MPa

Tensile Strength, Yield 320 MPa 0,2% offset 

Elongation at Break 30% in 25 mm 

Modulus of Elasticity 322 GPa in tension 

Bulk Modulus 281 GPa

Poisson's Ratio 0,31   

Shear Modulus 123 GPa

Technetium (As-Rolled)

Hardness, Brinell 442

Hardness, Vickers 394

Tensile Strength, Ultimate 1510 MPa

Tensile Strength, Yield 1290 MPa 0,2% offset 

Elongation at Break 4% in 25 mm



Ruthenium (Annealed)

Hardness, Brinell 220 Converted from Vickers for 3000 kg load/10 mm ball Brinell test

Hardness, Rockwell A 60 Converted from Vickers

Hardness, Rockwell B 96 Converted from Vickers

Hardness, Rockwell C 18 Converted from Vickers

Hardness, Vickers 220

Tensile Strength, Ultimate 370 MPa

Modulus of Elasticity 414 GPa

Ruthenium (Hot Rolled Bar)

Tensile Strength, Ultimate 540 MPa

Modulus of Elasticity 414 GPa



Rhodium (Annealed)

Hardness, Brinell 89  Converted from Vickers for 500 kg load/10 mm ball Brinell test

Hardness, Rockwell A 35  Converted from Vickers

Hardness, Rockwell B 51  Converted from Vickers

Hardness, Vickers 100

Tensile Strength, Ultimate 951 MPa

Modulus of Elasticity 359 GPa

Rhodium (As-Plated)

Hardness, Brinell 722  Converted from Vickers for 3000 kg load/10 mm ball Brinell test

Hardness, Rockwell A 83  Converted from Vickers 

Hardness, Rockwell C 63  Converted from Vickers

Hardness, Vickers 800   

Tensile Strength, Ultimate 700 MPa

Rhodium (Hardened)

Tensile Strength, Ultimate 2068 MPa



Palladium

Hardness, Vickers 37 Annealed 

Tensile Strength, Ultimate 180 MPa Annealed 

Modulus of Elasticity 117 GPa

Poisson's Ratio 0,39

Shear Modulus 49 GPa Calculated 



Silver

Hardness, Vickers 25 Annealed 

Tensile Strength, Ultimate 140 MPa Annealed 

Modulus of Elasticity 76 GPa

Poisson's Ratio 0,37 Annealed 

Poisson's Ratio 0,39 Hard drawn 

Shear Modulus 32 GPa Calculated; Annealed 



Cadmium

Hardness, Brinell 16–24

Hardness, Vickers 22

Tensile Strength, Ultimate 75 MPa

Elongation at Break 50% in 25 mm 

Modulus of Elasticity 55,2 GPa

Poisson's Ratio 0,33   

Shear Modulus 19,2 GPa



Indium

Hardness, Brinell 0,9

Hardness, Vickers Max 10

Tensile Strength, Ultimate 4,5 MPa Annealed 

Modulus of Elasticity 12,7 GPa in tension 

Compressive Yield Strength 2,14 MPa

Poisson's Ratio 0,4498

Shear Modulus 5 GPa Calculated 



Tin

Hardness, Brinell 3,9

Tensile Strength, Ultimate 220 MPa

Modulus of Elasticity 41,4 GPa

Poisson's Ratio 0,33

Shear Modulus 18 GPa Calculated



Antimony

Hardness, Brinell 30–58

Hardness, Vickers 30–60  

Tensile Strength, Ultimate 11,4 MPa

Modulus of Elasticity 77,759 GPa

Shear Modulus 19 GPa 



Tellurium

Hardness, Brinell 25

Tensile Strength, Ultimate 11 MPa

Modulus of Elasticity 40 GPa

Poisson's Ratio 0,33 

Shear Modulus 15,16 GPa



Cesium

Bulk Modulus 1,57 GPa



Barium

Modulus of Elasticity 12,8 GPa

Bulk Modulus 10,2 GPa

Poisson's Ratio 0,28

Shear Modulus 6 GPa Calculated 



Lanthanum

Hardness, Vickers 28

Tensile Strength, Ultimate 130 MPa

Tensile Strength, Yield 125 MPa

Elongation at Break 7,9%

Modulus of Elasticity 36,6 GPa in tension 

Bulk Modulus 27,9 GPa

Poisson's Ratio 0,28   

Shear Modulus 14,3 GPa



Cerium

Hardness, Vickers 24

Tensile Strength, Ultimate 100 MPa

Tensile Strength, Yield 91 MPa

Modulus of Elasticity 41,4 GPa

Bulk Modulus 21,5 GPa

Poisson's Ratio 0,248

Shear Modulus 13,5 GPa



Praseodymium

Hardness, Vickers 20

Tensile Strength, Ultimate 110 MPa 

Tensile Strength, Yield 100 MPa 

Elongation at Break 15% 

Modulus of Elasticity 37,3 GPa in tension 

Bulk Modulus 28,8 GPa

Poisson's Ratio 0,281

Shear Modulus 14,8 GPa



Neodymium

Hardness, Vickers 18

Tensile Strength, Ultimate 170 MPa

Tensile Strength, Yield 165 MPa

Elongation at Break 25%

Modulus of Elasticity 41,4 GPa

Bulk Modulus 31,8 GPa

Poisson's Ratio 0,281

Shear Modulus 16,3 GPa



Promethium

Hardness, Knoop 63

Tensile Strength, Ultimate 160 MPa

Tensile Strength, Yield 70 MPa

Elongation at Break 25%

Modulus of Elasticity 50 GPa (tension) 

Bulk Modulus 33 GPa

Poisson's Ratio 0,28

Shear Modulus 18 GPa



Samarium

Hardness, Vickers 39

Tensile Strength, Ultimate 120–156 MPa different sources report in this range 

Tensile Strength, Yield 68–112 MPa

Elongation at Break 17% 

Modulus of Elasticity 49,7 GPa in tension 

Bulk Modulus 37,8 GPa

Poisson's Ratio 0,274

Shear Modulus 19,5 GPa



Europium

Hardness, Vickers 17

Modulus of Elasticity 18,2 GPa in tension 

Bulk Modulus 8,3 GPa

Poisson's Ratio 0,152

Shear Modulus 7,9 GPa



Gadolinium

Hardness, Vickers 37 polycrystalline 

Tensile Strength, Ultimate 190 MPa

Tensile Strength, Yield 173 MPa

Elongation at Break 37%    

Modulus of Elasticity 54,8 GPa in tension 

Bulk Modulus 37,9 GPa

Poisson's Ratio 0,259

Shear Modulus 24 GPa Calculated 



Terbium

Hardness, Vickers 38 polycrystalline 

Tensile Strength, Ultimate 140 MPa

Tensile Strength, Yield 60 MPa

Elongation at Break 12%   

Modulus of Elasticity 55,7 GPa in tension 

Bulk Modulus 38,7 GPa

Poisson's Ratio 0,26 Calculated 

Shear Modulus 22,1 GPa



Dysprosium

Hardness, Vickers 44

Tensile Strength, Ultimate 246 MPa

Tensile Strength, Yield 225 MPa

Elongation at Break 30%

Modulus of Elasticity 61,4 GPa in tension 

Bulk Modulus 40,5 GPa

Poisson's Ratio 0,237

Shear Modulus 24,7 GPa



Holmium

Hardness, Vickers 46 

Tensile Strength, Ultimate 259 MPa

Tensile Strength, Yield 221 MPa

Modulus of Elasticity 64,8 GPa in tension 

Bulk Modulus 40,2 GPa

Poisson's Ratio 0,231

Shear Modulus 26,3 GPa



Erbium

Hardness, Vickers 42

Tensile Strength, Ultimate 136 MPa

Tensile Strength, Yield 60 MPa

Elongation at Break 11,5%

Reduction of Area 11,9%

Modulus of Elasticity 69,9 GPa in tension 

Bulk Modulus 44,4 GPa

Poisson's Ratio 0,237

Shear Modulus 28,3 GPa



Thulium

Hardness, Vickers 48

Tensile Strength, Ultimate 140 MPa

Tensile Strength, Yield 60 MPa

Elongation at Break 12%

Modulus of Elasticity 74 GPain tension 

Bulk Modulus 44,5 GPa

Poisson's Ratio 0,213

Shear Modulus 30,5 GPa



Ytterbium

Hardness, Vickers 17

Tensile Strength, Ultimate 72 MPa

Tensile Strength, Yield 66 MPa

Elongation at Break 43%

Modulus of Elasticity 23,7 GPa in tension 

Bulk Modulus 30,5 GPa

Poisson's Ratio 0,207

Shear Modulus 9,9 GPa



Lutetium

Hardness, Vickers 44

Tensile Strength, Ultimate 140 MPa

Tensile Strength, Yield 60 MPa

Elongation at Break 12%

Modulus of Elasticity 68,6 GPa in tension 

Bulk Modulus 47,6 GPa

Poisson's Ratio 0,261

Shear Modulus 27,2 GPa



Hafnium (Rod)

Tensile Strength, Ultimate 485 MPa

Tensile Strength, Yield 240 MPa

Elongation at Break 25%

Hafnium (Plate)

Tensile Strength, Ultimate 450 MPa Longitudinal 

Tensile Strength, Ultimate 470 MPa Transverse 

Tensile Strength, Yield 195 MPa Longitudinal 

Tensile Strength, Yield 310 MPa Transverse 

Elongation at Break 25% Longitudinal or Transverse 

Hafnium (Strip)

Tensile Strength, Ultimate 450 MPa Longitudinal or Transverse 

Tensile Strength, Yield 170 MPa Longitudinal 

Tensile Strength, Yield 275 MPa Transverse 

Elongation at Break 30% Longitudinal or Transverse 



Tantalum (Annealed)

Hardness, Brinell 95 Converted from Vickers for 3000 kg load/10 mm ball Brinell test

Hardness, Rockwell A 35  Converted from Vickers

Hardness, Rockwell B 51  Converted from Vickers

Hardness, Vickers 100

Tensile Strength, Ultimate 450 MPa

Modulus of Elasticity 186 GPa

Poisson's Ratio 0,35

Fatigue Strength 230 MPa 50,000,000 cycles, E-beam melted sample; rotating beam test, 

Shear Modulus 69 GPa

Tantalum (Cold Worked)

Hardness, Brinell 195  Converted from Vickers for 3000 kg load/10 mm ball Brinell test

Hardness, Rockwell A 56  Converted from Vickers

Hardness, Rockwell B 92  Converted from Vickers 

Hardness, Rockwell C 12  Converted from Vickers 

Hardness, Vickers 200

Tensile Strength, Ultimate 900 MPa



Tungsten

Hardness, Brinell 294  Estimated from Vickers 

Hardness, Knoop 318  Estimated from Vickers 

Hardness, Rockwell A 66  Estimated from Vickers 

Hardness, Rockwell C 31  Estimated from Vickers 

Hardness, Vickers 310

Tensile Strength, Ultimate 980 MPa

Tensile Strength, Yield 750 MPa 0,2% Offset 

Modulus of Elasticity 400 GPa

Poisson's Ratio 0,28   

Shear Modulus 175 GPa Calculated 

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

Tensile Strength, Ultimate 1000 MPa

Modulus of Elasticity 560 GPa

Osmium (Cold-Worked)

Hardness, Brinell 580 Converted from Vickers for 3000 kg load/10 mm ball Brinell test 

Hardness, Rockwell A 80 

Hardness, Rockwell C 57 

Hardness, Vickers 670   

Osmium (Arc-Melted)

Hardness, Brinell 722  Converted from Vickers for 3000 kg load/10 mm ball Brinell test

Hardness, Knoop 822  Converted from Vickers

Hardness, Rockwell A 83,4  Converted from Vickers

Hardness, Rockwell C 64  Converted from Vickers

Hardness, Vickers 800



Iridium (Annealed)

Hardness, Brinell 352  Converted from Vickers for 3000 kg load/10 mm ball Brinell test 

Hardness, Rockwell A 69 

Hardness, Rockwell C 37 

Hardness, Vickers 370

Tensile Strength, Ultimate 1000 MPa

Modulus of Elasticity 524 GPa

Poisson's Ratio 0,26   

Shear Modulus 232 GPa Calculated 

Iridium (Cold-Drawn)

Hardness, Brinell 565  Converted from Vickers for 3000 kg load/10 mm ball Brinell test 

Hardness, Rockwell A 80 

Hardness, Rockwell C 56 

Hardness, Vickers 650

Tensile Strength, Ultimate 2000 MPa



Platinum (CP Grade, Annealed)

Hardness, Vickers 40

Tensile Strength, Ultimate 125–165 MPa

Elongation at Break 35% in 50 mm 

Modulus of Elasticity 171 GPa static in tension 

Poisson's Ratio 0,39

Shear Modulus 62 GPa Calculated value 

Platinum (CP Grade, Hard Drawn–50% Cold Worked)

Hardness, Knoop 103  Estimated from Vickers, 

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 

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 Α 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 α 

Tensile Strength, Yield 275 MPa Cast α

Elongation at Break 0,2–0,5% Cast α 

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.







Symbol

Mohs HM

Li

0,6

Be

5,5

B

9,3

Diamond (С)

10

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

Symbol

Mohs 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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