What is Brass?
{{redlinks|date=August 2024}} [[Image: Brass.jpg|thumb|250px|Brass paperweight.]] '''Brass''' is an [[alloy]] of [[copper]] and [[zinc]]. Some types of brass are called [[bronzes]]. Brass has a golden appearance. It is harder than pure metals and resists [[corrosion]]. It costs more than [[zinc]]. There are some common brasses: * [[Alpha brass]]es - with less than 40% zinc * [[Beta brass]]es - * [[White brass]]es - with more than 45% zinc Things brass are used to make include: * [[Brass instrument]]s * [[Ornament]]s * [[Electricity|Electrical]] fittings * [[Button]]s * [[Screw]]s * [[Tap (valve)|Tap]]s * [[Hinge]]s * [[Door handle|Door knobs]] ==Properties== Brass is more [[malleable]] than [[bronze]] or [[zinc]]. The [[melting point]] of brass can be 900 to 940 °C or 1,650 to 1,720 °F, depending on what it is made of. The [[density]] of brass is 8.4 to 8.73 g/cm<sup>3</sup> (0.303 to 0.315 lb/cu in).<ref>{{Cite web|title=Mass, Weight, Density or Specific Gravity of Different Metals|url=https://www.simetric.co.uk/si_metals.htm|access-date=2020-10-21|website=www.simetric.co.uk}}</ref> Today, almost 90% of all brass [[Alloy|alloys]] are [[Recycling|recycled]]. Brass is not [[Ferromagnetism|ferromagnetic]]. Brass [[scrap]] is collected and [[Transport|transported]] to the [[foundry]]. In the foundry, it is melted and recast into [[Billet|billets]]. The billets are heated and stretched into the form and size that is wanted.<ref>{{Cite book|url=https://books.google.com/books?id=iXxGAAAAMAAJ|title=Newnes Engineer's Reference Book|last=Camm|first=Frederick James|date=1949|publisher=George Newnes|language=en}}</ref> Brass will [[corrode]] when it is exposed to moisture, [[Chloride|chlorides]], [[Acetate|acetates]], [[ammonia]], and some [[Acid|acids]]. == Brass alloys == There are many brass alloys. They include: * [[Abyssinian gold]] * [[Admiralty brass]] * [[Aich's alloy]] * [[Aluminum brass]] * [[Arsenical brass]] * [[Cartridge brass]] * [[Common brass]] * [[DZR brass]] * [[Delta metal]] * [[Free machining