extreme hardness

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• hardness — hard ► ADJECTIVE 1) solid, firm, and rigid; not easily broken, bent, or pierced. 2) requiring or demonstrating a great deal of endurance or effort; difficult. 3) (of a person) not showing any signs of weakness; tough. 4) (of information or a… …   English terms dictionary

• Heart hardness — Heart Heart (h[aum]rt), n. [OE. harte, herte, heorte, AS. heorte; akin to OS. herta, OFies. hirte, D. hart, OHG. herza, G. herz, Icel. hjarta, Sw. hjerta, Goth. ha[ i]rt[=o], Lith. szirdis, Russ. serdtse, Ir. cridhe, L. cor, Gr. kardi a, kh^r.… …   The Collaborative International Dictionary of English

• Mangalloy — Mangalloy, also called manganese steel or Hadfield steel, is a steel alloy containing an average of around 13% manganese. Mangalloy is known for its high impact strength and resistance to abrasion. Material properties World War I Brodie helmet,… …   Wikipedia

• Diamond — This article is about the mineral. For the gemstone, see Diamond (gemstone). For other uses, including the shape ◊, see Diamond (disambiguation) …   Wikipedia

• Material properties of diamond — This article addresses the material properties of diamond. For a broader discussion of diamonds, see diamond. For other uses of the word diamond, see diamond (disambiguation). Diamond An octahedral diamond crystal in matrix Gener …   Wikipedia

• Diamond-like carbon — A ta C thin film on silicon (15 mm diameter) exhibiting regions of 40 nm and 80 nm thickness …   Wikipedia

• Chobham armour — A pre series American M1 Abrams, the first main battle tank type to be protected by Chobham armour …   Wikipedia

• Tool steel — Iron alloy phases Ferrite (α iron, δ iron) Austenite (γ iron) Pearlite (88% ferrite, 12% cementite) …   Wikipedia

• diamond — diamondlike, adj. /duy meuhnd, duy euh /, n. 1. a pure or nearly pure, extremely hard form of carbon, naturally crystallized in the isometric system. 2. a piece of this stone. 3. a transparent, flawless or almost flawless piece of this stone, esp …   Universalium

• Diamond — /duy meuhnd, duy euh /, n. 1. Neil, born 1941, U.S. singer and songwriter. 2. Cape, a hill in Canada, in S Quebec, on the St. Lawrence River. * * * I Mineral composed of pure carbon, the hardest naturally occurring substance known and a valuable… …   Universalium

• Alloy — This article is about the type of material. For the specification language, see Alloy (specification language). For lightweight auto wheels, see alloy wheel. Steel is a metal alloy whose major component is iron, with carbon content between 0.02%… …   Wikipedia