hardness index — число твердости
hardness scale — шкала твердости
nail hardness — твердость ногтей
glass hardness — твердость стекла
hardness degree — степень закалки
English-Russian big polytechnic dictionary. 2014.
Iron — Fe redirects here. For other uses, see Fe (disambiguation). This article is about the chemical element. For other uses, see Iron (disambiguation). manganese … Wikipedia
Tempering — For other uses, see Temper (disambiguation). Tempered steel. The various colors produced indicate the temperature to which the steel was heated. Light straw indicates 204 °C (399 °F) and light blue indicates 337 °C (639 °F) … Wikipedia
hardenability — the property that determines the depth and distribution of hardness when steel is heated to a given temperature and then quenched (more precisely it may be defined as an inverse measure of the severity of cooling conditions necessary to produce… … Mechanics glossary
