H68黄铜成分介绍H68力学性能抗拉强度

 H68黄铜

H68即H68 普通黄铜，有极为良好的塑性和较高的强度，可切削加工性能好，易焊接。

中文名h68标    准（GB/T 5231-2012)特    性有极为良好的塑性适用范围制造弹壳材料适用范围有极为良好的塑性（是黄铜中最佳者）和较高的强度，可切削加工性能好，易焊接，对一般腐蚀非常安定，但在氨气气氛中易产生腐蚀开裂。H68是黄铜中应用最为广泛的一个品种。H68A中加有微量的砷，可防止黄铜脱锌，并提高黄铜的耐蚀性。力学性能抗拉强度 σb (MPa)：≥660伸长率 δ10 (%)：≥15伸长率 δ5 (%)：≥18H68热处理规范：引热加工温度750～830℃;退火温度520～650℃;消除内应力的低温退火温度260～270℃。化学成分含铜Cu 67.0～70.0,锌Zn 余量,铅Pb≤0.03,磷P≤0.01,铁Fe≤0.10,锑Sb≤0.005,铋Bi≤0.005,注：≤0.3(杂质)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=1620635322823&bpp=4&bdt=99&idt=233&shv=r20210505&cbv=%2Fr20190131&ptt=9&saldr=aa&cookie=ID%3D113c8823094a3c32-227bf153f2c700f8%3AT%3D1620630738%3ART%3D1620630738%3AS%3DALNI_MapIGQPEmsnA-xlF1kK2eeUfsUdtA&nras=1&correlator=6830541749513&frm=23&ife=1&pv=2&ga_vid=607571458.1620635323&ga_sid=1620635323&ga_hid=1047558899&ga_fc=0&nhd=1&u_tz=480&u_his=24&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=44739521%2C31060956&oid=3&pvsid=626330850253120&pem=423&ref=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fadd_suc%3D1&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.dqqzdrbca3kk&fsb=1&dtd=269" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" data-google-container-id="1.dqqzdrbca3kk" data-load-complete="true">