Sparda Posted June 29, 2005 Report Share Posted June 29, 2005 What would be the hardest element except for carbon(diamonds)? i am suggesting titanium, tungsten carbide, forged steel or 7075 aluminium or any other variety of a element or alloy. also what would be the lightest metal(titanium?)? Please share what you know. Quote Link to comment Share on other sites More sharing options...
Ishiyoshi Posted June 29, 2005 Report Share Posted June 29, 2005 I would say Lutetium is the heaviest and hardest element; at least of the rare earth classification. Some info from Chemical ElementsBasic InformationName: Lutetium Symbol: Lu Atomic Number: 71 Atomic Mass: 174.967 amu Melting Point: 1656.0 °C (1929.15 °K, 3012.8 °F) Boiling Point: 3315.0 °C (3588.15 °K, 5999.0 °F) Number of Protons/Electrons: 71 Number of Neutrons: 104 Classification: Rare Earth Crystal Structure: Hexagonal Density @ 293 K: 9.85 g/cm3 Color: silvery Quote Link to comment Share on other sites More sharing options...
Sparda Posted June 29, 2005 Author Report Share Posted June 29, 2005 i just did some extra research and came across Boron-nitride, an alloy of aluminium, magnesium and boron. i have no idea which one is harder since im only 14. Quote Link to comment Share on other sites More sharing options...
SlowMo Posted June 29, 2005 Report Share Posted June 29, 2005 since you're sarching for elements, alloy metals don't count.i thought glass (silicium) would be the next hardest element after diamonds, but i'm not so shure... Quote Link to comment Share on other sites More sharing options...
Breepee2 Posted June 29, 2005 Report Share Posted June 29, 2005 Glass is actually siliciumdioxide, so in essence that's no element either.Wouldn't know the answer to be honest. Why do you need it by the way? Just curiosity (I like that )? If it's an actual material you need, an alloy would suffice I think? Quote Link to comment Share on other sites More sharing options...
D-EJ915 Posted June 30, 2005 Report Share Posted June 30, 2005 It's not an element, but the hardest plastic is UHMW-PE (ultra-high-molecular-weight poly-etheylyine or something like that...) and it's used in aggressive inline skating parts because it's durable and slides really fast...not like that's what you were wanting to know though... Quote Link to comment Share on other sites More sharing options...
sushi Posted June 30, 2005 Report Share Posted June 30, 2005 Kryptonite? Quote Link to comment Share on other sites More sharing options...
raintheory Posted June 30, 2005 Report Share Posted June 30, 2005 first off.. diamonds are minerals. so if we are talking minerals, second to diamonds corundum (aluminum oxide) would be about the second harders (a 9 on Moh's scale of hardness, whereas diamonds are 10).elements are a completely different story, but it seems as though you aren't talking strictly elements.as far as lightest metal (element-wise, and also the lightest solid), Lithium wins. Quote Link to comment Share on other sites More sharing options...
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