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  • E770

    senior tag

    válasz CptAdamica #44 üzenetére

    remélem ez segít:

    Hardness Substance or mineral
    0.2–0.3 caesium, rubidium
    0.5–0.6 lithium, sodium, potassium
    1 talc
    1.5 gallium, strontium, indium, tin, barium, thallium, lead, graphite, ice[13]
    2 hexagonal boron nitride,[14] calcium, selenium, cadmium, sulfur, tellurium, bismuth, gypsum
    2–2.5 halite (rock salt)
    2.5–3 gold, silver, aluminium, zinc, lanthanum, cerium, Jet (lignite)
    3 calcite, copper, arsenic, antimony, thorium, dentin
    3.5 platinum
    4 fluorite, iron, nickel
    4–4.5 steel
    5 apatite (tooth enamel), zirconium, palladium, obsidian (volcanic glass)
    5.5 beryllium, molybdenum, hafnium, glass, cobalt
    6 orthoclase, titanium, manganese, germanium, niobium, rhodium, uranium
    6–7 fused quartz, iron pyrite, silicon, ruthenium, iridium, tantalum, opal, peridot, tanzanite, jade
    7 osmium, quartz, rhenium, vanadium
    7.5–8 emerald, hardened steel, tungsten, spinel
    8 topaz, cubic zirconia
    8.5 chrysoberyl, chromium, silicon nitride, tantalum carbide
    9 corundum, tungsten carbide, titanium nitride
    9–9.5 silicon carbide (carborundum), titanium carbide
    9.5–10 boron, boron nitride, rhenium diboride (a-axis),[15] stishovite, titanium diboride
    10 diamond, carbonado

    Forrás: [link]

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