Hardnesses of the elements (data page)

number symbol name Mohs hardness Vickers hardness(MPa) Brinell hardness(MPa) Brinell hardness(MPa) 3 Li lithium 0.6 5 4 Be beryllium5.51670 590–1320 5 B boron9.3–9.54900–5800 6 C carbon (graphite) 0.5 6 C carbon (diamond) 10.0 11 Na sodium 0.5 0.69 12 Mg magnesium 2.5 260 44 (cast) 13 Al aluminium 2.75 160–350 160–550 184 14 Si silicon 6.5 16 S sulfur 2.0 19 K potassium 0.4 0.363 20 Ca calcium 1.75 170 416 21 Sc scandium 736–1200 22 Ti titanium 6.0 830–3420 716–2770 1028 23 V vanadium 7.0 628–640 600–628 742 24 Cr chromium8.5 1060 687–6500 688 25 Mn manganese 6.0 196 26 Fe iron 4.0 608 200–1180 27 Co cobalt 5.0 1043 470–3000 1291 28 Ni nickel 4.0 638 667–1600 900–1200 29 Cu copper 3.0 343–369 235–878 520 30 Zn zinc 2.5 327–412 480–520 31 Ga gallium 1.5 56.8–68.7 32 Ge germanium 6.0 33 As arsenic 3.5 1440 34 Se selenium 2.0 736 37 Rb rubidium 0.3 0.216 38 Sr strontium 1.5 39 Y yttrium 200–589 40 Zr zirconium 5.0 820–1800 638–1880 333 41 Nb niobium 6.0 870–1320 735–2450 735 42 Mo molybdenum 5.5 1400–2740 1370–2500 1340 (cast) 44 Ru ruthenium 6.5 2298 2160 1795 45 Rh rhodium 6.0 1100–8000 980–1350 540 46 Pd palladium 4.75 400–600 320–610 310 47 Ag silver 2.5 250 245–250 206 48 Cd cadmium 2.0 203–220 196 49 In indium 1.2 8.83–10 9.8 50 Sn tin 1.5 51–75 292–441 (cast) 51 Sb antimony 3.0 294–384 52 Te tellurium 2.25 180–270 55 Cs caesium 0.2 0.147 56 Ba barium 1.25 57 La lanthanum 2.5360–1750 350–400 58 Ce cerium 2.5 210–470 186–412 59 Pr praseodymium 1.6 250–746 250–638 60 Nd neodymium 343–746 265–700 61 Pm promethium 617.8 62 Sm samarium 412–441 441–600 63 Eu europium 167–200 64 Gd gadolinium 510–950 65 Tb terbium 450–863 677–1200 66 Dy dysprosium 412–550 500–1050 67 Ho holmium 412–600 500–1250 68 Er erbium 2.0 432–700 600–1070 69 Tm thulium 470–650 471–900 70 Yb ytterbium 206–250 343–441 71 Lu lutetium 755–1160 893–1300 72 Hf hafnium 5.5 1520–2060 1450–2100 73 Ta tantalum 6.5 873–1200 441–3430 441–1224 74 W tungsten 7.5 3430–4600 2000–4000 1960–2450 75 Re rhenium 7.0 1350–7850 1320–2500 76 Os osmium7.0 3920–4000 3487 77 Ir iridium6.5 1760–2200 1670 2120 78 Pt platinum 3.5 400–549 310–500 299 79 Au gold 2.5 188–216 188–245 189 80 Hg mercury 1.5 81 Tl thallium 1.2 26.5–44.7 82 Pb lead 1.5 38–50 37.5–41.8 (cast) 83 Bi bismuth 2.25 70–94.2 70 90 Th thorium 3.0 294–687 390–1500 92 U uranium 6.0 1960–2500 2350–3850

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References

See also Mohs scale of mineral hardness Mohs hardness of materials (data page) Vickers hardness test Brinell scale