chromium-manganese steel
41Bereznyak-Isayev BI-1 — infobox Aircraft name =Bereznyak Isayev 1 type =Fighter manufacturer =OKB 293 caption =The BI 1 designer =A.Y.Bereznyak and A.M.Isayev first flight =15 May 1942 retired =9 March 1945 primary user =Soviet Air Force number built =9Soviet research… …
42Ductile iron — Iron alloy phases Ferrite (α iron, δ iron) Austenite (γ iron) Pearlite (88% ferrite, 12% cementite) …
43Metal — This article is about metallic materials. For other uses, see Metal (disambiguation). Some metal pieces Metals Alkali metals …
44White Portland cement — or white ordinary Portland cement (WOPC) is similar to ordinary, gray Portland cement in all respects except for its high degree of whiteness. Obtaining this color requires substantial modification to the method of manufacture, and because of… …
45ESCO Corporation — [http://www.escocorp.com www.escocorp.com] is a global manufacturer of engineered metal wearparts and components for industrial applications – including mining, construction, power generation and aerospace. For nearly a century, the privately… …
46North America — North American. the northern continent of the Western Hemisphere, extending from Central America to the Arctic Ocean. Highest point, Mt. McKinley, 20,300 ft. (6187 m); lowest, Death Valley, 276 ft. (84 m) below sea level. 400,000,000 including… …
47hardenability — 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… …
48chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… …
49attraction — Magnetic Mag*net ic, Magnetical Mag*net ic*al, a. [L. magneticus: cf. F. magn[ e]tique.] 1. Pertaining to the magnet; possessing the properties of the magnet, or corresponding properties; as, a magnetic bar of iron; a magnetic needle. [1913… …
50Base metal — Metal Met al (? or ?; 277), n. [F. m[ e]tal, L. metallum metal, mine, Gr. ? mine; cf. Gr. ? to search after. Cf. {Mettle}, {Medal}.] 1. (Chem.) An elementary substance, as sodium, calcium, or copper, whose oxide or hydroxide has basic rather than …
