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7005 is an aluminium alloy used primarily for bicycle frames, due to its relative ease of welding. It has similar physical properties to 6061 aluminium alloy, except it has a higher density of 2.78 g/cm³, and depending on the temper, may be slightly stronger. It does not need to be precipitation hardened, unlike 6061, but can be cooled in air.〔http://books.google.co.uk/books?id=Lskj5k3PSIcC&pg=PA430&lpg=PA430&dq=7005+air+hardening&source=bl&ots=FtA2bgbBeU&sig=i7C1UrpfCgsHw5b0z5Vr_1IjAL0&sa=X&ei=O7czUKU6ycfRBaP0gPAF&ved=0CEsQ6AEwCQ#v=onepage&q=7005%20air%20hardening&f=false〕 Specific forms of AL 7005 include: * 7005-O * 7005-T5 * 7005-T53 * 7005-T6 〔(【引用サイトリンク】url=http://www.makeitfrom.com/material-properties/7005-AlZn4.5Mg1.5Mn-A97005-Aluminum/ )〕 == Chemical composition == The alloy composition of 7005 is: *Aluminium 91.0% - 94.7% *Chromium 0.06% - 0.20% 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「7005 aluminium alloy」の詳細全文を読む スポンサード リンク
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