/air"hahr'dn ing/, adj. Metall.
noting any metal, esp. alloy steel, that can be hardened from above its transformation point by cooling in air.

Useful english dictionary. 2012.

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  • Air hardening steel — Air hardening steel. См. Воздушно закаливаемая сталь. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • air-hardening — /air hahr dn ing/, adj. Metall. noting any metal, esp. alloy steel, that can be hardened from above its transformation point by cooling in air. [1905 10] * * * …   Universalium

  • air-hardening steel — sometimes referred to as self hardening steel. A steel that becomes fully hardened when cooled in air from above its critical point and does not require rapid quenching by oil or water. The risk of distortion is greatly reduced by air hardening.… …   Mechanics glossary

  • air-hardening lime — orinės kalkės statusas T sritis chemija apibrėžtis Ore kietėjančios kalkės. atitikmenys: angl. air hardening lime; common lime; quicklime rus. воздушная известь …   Chemijos terminų aiškinamasis žodynas

  • air-hardening steel — noun : an alloy steel that can be hardened by cooling from a temperature higher than the transformation range either in air or by quenching in a liquid called also self hardening steel …   Useful english dictionary

  • self-hardening steel — noun : air hardening steel …   Useful english dictionary

  • Case hardening — or surface hardening is the process of hardening the surface of a metal, often a low carbon steel, by infusing elements into the material s surface, forming a thin layer of a harder alloy. Case hardening is usually done after the part in question …   Wikipedia

  • Precipitation hardening — Precipitation hardening, also called age hardening, is a heat treatment technique used to increase the yield strength of malleable materials, including most structural alloys of aluminium, magnesium, nickel and titanium, and some stainless steels …   Wikipedia

  • Case hardening of rocks — Case hardening is a weathering phenomenon of rock surface induratoin. It is observed commonly in: felsic alkaline rocks, such as nepheline syenite, phonolite and trachyte; pyroclastic rocks, as pyroclastic flow deposit, fine air fall deposits and …   Wikipedia

  • surface hardening — ▪ metallurgy       treatment of steel by heat or mechanical means to increase the hardness of the outer surface while the core remains relatively soft. The combination of a hard surface and a soft interior is greatly valued in modern engineering… …   Universalium

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