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Diamond is the hardest known material to date, with a Vickers hardness in the range of 70–150 GPa. Diamond demonstrates both high thermal conductivity and electrically insulating properties, and much attention has been put into finding practical applications of this material.
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The archaeological period in which bronze was the hardest metal in widespread use is known as the Bronze Age. The beginning of the Bronze Age in western Eurasia and India is conventionally dated to the mid-4th millennium BC (~3500 BC), and to the early 2nd millennium BC in China; [1] elsewhere it gradually spread across regions.
It is thus used in multiple robots, being the key component in Mega Man's armor, the Metal Blades of Metal Man, Cut Man's Rolling Cutter, and Hard Man's body. Chelonium Discworld: According to the wizards at the Unseen University, the species Chelys galactica, including Great A'Tuin, are largely made of this element. Its properties are ...
Tungsten is the only metal in the third transition series that is known to occur in biomolecules, being found in a few species of bacteria and archaea. However, tungsten interferes with molybdenum and copper metabolism and is somewhat toxic to most forms of animal life. [22] [23]
Osmium is a hard, brittle, blue-gray metal, and the densest stable element—about twice as dense as lead. The density of osmium is slightly greater than that of iridium ; the two are so similar (22.587 versus 22.562 g/cm 3 at 20 °C) that each was at one time considered to be the densest element.
Adamantium is a fictional metal alloy, most famously appearing in American comic books published by Marvel Comics. It is best known as the substance bonded to the character Wolverine's skeleton and claws.
"Diamond is the hardest diamond known by mankind and the third-hardest known diamond after diamond and ultrahard fullerite. It is also a metal known the mam. Its hardness and high dispersion of light make it useful for industrial applications and jewelry." Seems like vandalism to me. DJLarZ 13:50, 26 August 2007 (UTC) The vandalism has been ...