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4J50 4J50铁镍定膨胀合金是通过调整镍含量而获得在给定温度范围内能与膨胀系数不同的软玻璃和陶瓷匹配的定膨胀合金，其膨胀系数和居里点随镍含量增加而增加。该合金是电真空工业中广泛使用的封接结构材料。欢迎您的来电咨询！周工/TEL：138---1616---6343（微信同号）4J50成分CMnSiPSAlCoNiFe≤0.050.800.300.0200.0200.101.049.5-50.5余量4J50物理及力学性能密度熔点8.21g/cm31430℃ 抗拉强度ób/Mpa屈服强度óp0.2/Mpa延伸率δ/%收缩率Ψ/%55027635654J50热处理制度标准规定的膨胀系数性能检验试样其热处理制度：在氢气气氛中将试样加热到900℃±20℃，保温1h，以不大于5℃/min速度冷至200℃以下出炉。4J50尺寸范围1，线径：直径0.08-12mm2，棒：直径1.0-300mm3，条带（线圈）：0.2-20mm TCK x 10-300mm W4，片材：小0.7mm TCK x 1200mm W大5，管材，锻件及机械零件：定制6，焊丝：0.8mm，1.0mm，1.2mm，2.0mm，2.4mm，3.2mm，3.8mm，4.0mm等7，焊接带：0.4-0.7mm TCK x 25-60mm W特征：4J50是一种可时效硬化的镍铬合金，兼具性，高强度和良好的可加工性。在高达700℃的温度下具有很高的蠕变断裂强度。其的抗松弛性有助于其在弹簧中的应用。ABSolute;top:0;border:0;width:undefinedpx;height:undefinedpx;" SANdbox="allow-forms 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%3A32776%2C2%3A32776%2C8%3A134217728%2C9%3A134250504%2C16%3A8388608%2C17%3A32%2C24%3A32%2C25%3A32%2C30%3A1081344%2C32%3A32&format=0x0&url=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fact%3D1&ea=0&flash=32.0.0*&pra=5&wgl=1&dt=1618996133542&bpp=8&bdt=477&idt=287&shv=r20210415&cbv=r20190131&ptt=9&saldr=aa&cookie=ID%3D1ebd60bd229e2e78-226db15279c70003%3AT%3D1618968751%3ART%3D1618968751%3AS%3DALNI_MbUa684sa9A_mkVADbZFy-YGEt5gQ&nras=1&correlator=8591019721113&frm=23&ife=1&pv=2&ga_vid=798997118.1618996134&ga_sid=1618996134&ga_hid=478565319&ga_fc=0&nhd=1&u_tz=480&u_his=4&u_java=0&u_h=768&u_w=1360&u_ah=728&u_aw=1360&u_cd=24&u_nplug=15&u_nmime=33&adx=-12245933&ady=-12245933&biw=1295&bih=597&isw=730&ish=360&ifk=2699508910&scr_x=0&scr_y=0&eid=44740079%2C31060828&oid=3&pvsid=895603905528449&pem=68&ref=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php&eae=2&fc=1920&brdim=0%2C0%2C0%2C0%2C1360%2C0%2C1360%2C728%2C730%2C360&vis=1&rsz=%7C%7Cs%7C&abl=NS&fu=4&bc=31&ifi=1&uci=1.9sqm04bp867j&fsb=1&dtd=358" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" data-google-container-id="1.9sqm04bp867j" data-load-complete="true"> |