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2219 aluminium alloy is an alloy in the wrought aluminium-copper family (2000 or 2xxx series). It can be heat-treated to produce tempers with a higher strength but a lower ductility. The aluminium-copper alloys have high strength, but are generally less corrosion resistant and harder to weld than other types of aluminium alloys. To compensate for the lower corrosion resistance, 2219 aluminium can be clad in a commercially pure alloy such as 1050 or painted. This alloy is commonly formed by both extrusion and forging, but is not used in casting.〔Marks' Standard Handbook for Mechanical Engineers, 8th Ed., McGraw Hill, pp. 6-50 to 6-57〕 Alternate designations include AlCu6Mn and A92219. It is described in the following standards:〔(2219 (A92219, AlCu6Mn) Aluminum ). Retrieved on 2014-12-03.〕 * ASTM B 209: Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate * ASTM B 211: Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire * ASTM B 221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes * ISO 6361: Wrought Aluminium and Aluminium Alloy Sheets, Strips and Plates ==Chemical Composition== The alloy composition of 2219 aluminium is:〔 * Aluminium: 91.5 to 93.8% * Copper: 5.8 to 6.8% * Iron: 0.3% max * Magnesium: 0.02% max * Manganese: 0.2 to 0.4% * Silicon: 0.2% max * Titanium: 0.02 to 0.10% * Vanadium: 0.05 to 0.15% * Zinc: 0.1% max * Zirconium: 0.10 to 0.25% * Residuals: 0.15% max 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「2219 aluminium alloy」の詳細全文を読む スポンサード リンク
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