chromium-tantalum alloy
41Scandium — (pronEng|ˈskændiəm) is a chemical element that has the symbol Sc and atomic number 21. A silvery white metal that is always present as compounds, scandium ores occur as rare minerals from Scandinavia and elsewhere, and it is sometimes considered… …
42Ytterbium — Yb redirects here. For the unit of information, see Yottabit. thulium ← ytterbium → lutetium ↑ Yb ↓ No …
43chemical 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… …
44metal — I (New American Roget s College Thesaurus) n. mineral, element, alloy, ore. See inorganic matter. II (Roget s IV) n. Syn. element, native rock, ore, metalliferous ore, ore deposit, free metal, refined ore, smelted ore; see also alloy , mineral .… …
45Cerium — lanthanum ← cerium → praseodymium ↑ Ce ↓ Th …
46Density — This article is about mass density. For other uses, see Density (disambiguation). The mass density or density of a material is defined as its mass per unit volume. The symbol most often used for density is ρ (the Greek letter rho). In some cases… …
47Fermium — Not to be confused with Ferrum , the Latin name for Iron. einsteinium ← fermium → mendelevium …
48List of chemistry topics — This page aims to list articles related to chemistry. This is so that those interested in the subject can monitor changes to the pages by clicking on Related Changes in the sidebar and on the bottom of the page.This list is not necessarily… …
49Allegheny Technologies — Infobox Company company name = Allegheny Technologies, Inc. company company type = Public (NYSE: [http://www.nyse.com/about/listed/lcddata.html?ticker=ATI ATI] ) company slogan = Specialty Materials That Make Our World foundation = Merger in 1996 …
50Native metal — Kondyor Mine Region Chabarowsk: native platinum nugget A native metal is any metal that is found in its metallic form, either pure or as an alloy, in nature. Metals that can be found as native deposits singly and/or in alloys include aluminium,… …
