QSn4-0.3对应国内的叫法

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QSn4-0.3有高的强度、弹性、耐磨性和抗磁性，在热态和冷态下压力加工性良好，对电火花有较高的抗燃性，可焊接和钎焊，可切削性良好，在大气、淡水中耐蚀。因含磷量较高，其疲劳强度抗性较高，弹性和耐磨性较好，但在热加工时有热脆性，只能接受冷压力加工。

QSn4-0.3化学成分：

铜 Cu ：余量

锡 Sn ：4.9-7.1

铅 Pb：≤0.05

磷 P：0.03-0.35

铁 Fe：≤0.01

锑 Sb ：≤0.002

铋 Bi：≤0.002

QSn4-0.3软态物理性能：

密度：8.86

热导率：87.6

硬度：55-70

抗拉强度：340

屈服强度：

退火温度：500-650

QSn4-0.3焊接性能：易于锡焊、铜焊、闪光焊、也能进行电弧焊、电焊，不易进行埋弧焊和电渣焊。QSn4-0.3主要用于各种尺寸的扁管和圆管，供做弹***元件使用。选用合适冷变形率的管材并进行消除应力的低温退火，以防压扁成形开裂。PARent;">ABSolute;top:0;border:0;width:undefinedpx;height:undefinedpx;" SANdbox="allow-forms allow-pointer-lock allow-popUPS allow-popups-to-escape-sandbox allow-same-origin allow-scripts allow-top-navigation-by-user-activation" frameborder="0" src="https://googleads.g.doubleclick.net/pagead/ads?client=ca-pub-6745515041074118&ouTPUt=html&adk=1812271804&adf=3279755396&plat=1%3A8%2C2%3A8%2C8%3A134217728%2C9%3A134250504%2C10%3A32%2C11%3A32%2C16%3A8388608%2C17%3A32%2C24%3A32%2C25%3A32%2C30%3A1048576%2C32%3A32%2C40%3A32&guci=2.2.0.0.2.2.0.0&format=0x0&url=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fact%3D1&ea=0&flash=29.0.0&pra=5&wgl=1&dt=1599271865951&bpp=6&bdt=64&idt=14&shv=r20200831&cbv=r20190131&ptt=9&saldr=aa&cookie=ID%3Db5fb53e0e30065ba%3AT%3D1583737358%3AS%3DALNI_Ma8ikyoXy9eAXtm0boiU2wMlNQHxw&nras=1&correlator=4906724111896&frm=23&ife=1&pv=2&ga_vid=2058328498.1599271866&ga_sid=1599271866&ga_hid=116459155&ga_fc=0&iag=3&icsg=42&nhd=1&dssz=4&mdo=0&mso=0&u_tz=480&u_his=50&u_java=0&u_h=1080&u_w=1920&u_ah=1040&u_aw=1920&u_cd=24&u_nplug=27&u_nmime=50&adx=-12245933&ady=-12245933&biw=986&bih=793&isw=730&ish=360&ifk=2699508910&scr_x=0&scr_y=0&eid=21066897%2C21066612&oid=3&pvsid=3117898926743889&pem=839&ref=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fadd_suc%3D1&rx=0&eae=2&fc=1664&brdim=786%2C19%2C786%2C19%2C1920%2C0%2C1083%2C970%2C730%2C360&vis=1&rsz=%7C%7Cs%7C&abl=NS&fu=8204&bc=31&ifi=0&uci=0.yzds1kkg0svk&fsb=1&dtd=53" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" data-google-container-id="0.yzds1kkg0svk" data-load-complete="true">