<p class="MsoNormal" quot;margin: 0cm 0cm 0pt;"><span lang="EN-US"><span quot;font-size: small;">2024</span></span></p> <p class="MsoNormal" quot;margin: 0cm 0cm 0pt; word-break: break-all; text-align: left; mso-pagination: widow-orphan;" align="left"><span quot;font-size: small;"><span quot;background: white; color: black; font-family: 宋体; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;">美国芬可乐<span lang="EN-US">(ALCOA)2024</span>准确铝板简介：</span><span quot;color: black; font-family: 宋体; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;" lang="EN-US"> </span></span></p> <table class="MsoNormalTable" quot;width: 高标准; mso-cellspacing: 0cm; mso-padding-alt: 0cm 0cm 0cm 0cm;" border="0" cellspacing="0" cellpadding="0" width="高标准"> <tbody> <tr quot;mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes;"> <td quot;background-color: transparent; border: #ece9d8; padding: 0cm;"> <p class="MsoNormal" quot;margin: 0cm 0cm 0pt; word-break: break-all; text-align: left; mso-pagination: widow-orphan;" align="left"><span quot;background: white; color: black; font-family: 宋体; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;" lang="EN-US"><span quot;font-size: small;">2024</span></span><span quot;background: white; color: black; font-family: 宋体; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"><span quot;font-size: small;">，国内通常叫做<span lang="EN-US">2A12</span>，相当于<span lang="EN-US">LY12</span>，通用的板材标准为<span lang="EN-US">AMS-QQ-A-250/4</span>（非包铝）；<span lang="EN-US">AMS-QQ-A-250/5</span>（包铝），主要用于飞机结构、铆钉、导弹构件、卡车轮毂、螺旋桨元件及其他种种结构件，为<span lang="EN-US">Al-Cu-Mg</span>系主要成分为</span><span lang="EN-US"><br /><br /></span><span quot;font-size: small;">硅</span><span quot;font-size: small;"><span lang="EN-US"> 0.5%<br /></span>铁</span><span quot;font-size: small;"><span lang="EN-US"> 0.5%<br /></span>铜</span><span quot;font-size: small;"><span lang="EN-US"> 3.8-4.9<br /></span>锰</span><span quot;font-size: small;"><span lang="EN-US"> 0.0-0.9<br /></span>镁</span><span quot;font-size: small;"><span lang="EN-US"> 1.2-1.8<br /></span>铬</span><span quot;font-size: small;"><span lang="EN-US"> 0.10<br /></span>镍</span><span lang="EN-US"><br /></span><span quot;font-size: small;">锌</span><span quot;font-size: small;"><span lang="EN-US"> 0.25<br /></span>钛<span lang="EN-US"> 0.15</span>（<span lang="EN-US">5</span>）</span><span lang="EN-US"><br /></span><span quot;font-size: small;">其它</span><span quot;font-size: small;"><span lang="EN-US">(3) 0.15<br /></span>铝<span lang="EN-US">(4) </span>其余</span><span lang="EN-US"><br /><br /></span><span quot;font-size: small;">注</span><span quot;font-size: small;"><span lang="EN-US">:<br />(1)</span>组合之元素性质以较高百分率表示，除非列出的是一个范围或是较低值。</span><span lang="EN-US"><br /><span quot;font-size: small;">(2) </span></span><span quot;font-size: small;">为了定出合适的数值限制，分析得来的观察或计算数值都是依据标准规则<span lang="EN-US">(ANSI Z25.1)</span>以表示明确的范围。</span><span lang="EN-US"><br /><span quot;font-size: small;">(3) </span></span><span quot;font-size: small;">除了非合金外，合金内的元素所规定的份量通常在分析报告中指示出来。但如果在分析过程中怀疑有其它元素存在或有部份元素被怀疑有过量的情形，更应进一步的分析直至有证实为止。</span><span lang="EN-US"><br /><span quot;font-size: small;">(4) </span></span><span quot;font-size: small;">不是经由精炼过程的非合金铝中的铝质的含量就是其它的金属的总量和高标准纯铝之差－其差别在于百 份<span lang="EN-US">0.01</span>或稍多一点。（百份比的小数点后第二位）</span></span><span quot;font-family: 宋体; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;" lang="EN-US"></span></p> </td> </tr> </tbody> </table>