金属及非金属密封材料的许用比压(参考)许用比压〔q〕/MPa材质名称材质牌号材质性质硬度密封面无滑动摩擦密封面有滑动摩擦皮鞋、中软橡胶片状中等硬度5.0聚四氟乙烯SFBN-2棒材邵氏硬度56HSD17.58.75RPTFE(60%PEEK、2%石墨)压制成形邵氏硬度75HSD3929RPTFE(20%玻璃纤细)压制成形邵氏硬度58HSD1511.25RPTFE(20%碳纤细)压制成形邵氏硬度65HSD17.513RPTFE(15%玻璃纤细、5%MoS2)压制成形邵氏硬度62HSD14.510增强聚四氟乙烯RPTFE(15%PEEK、5%石墨)压制成形邵氏硬度68HSD19.514.5POM聚甲醛压制成形邵氏硬度80HSD3929.25聚醚醚酮树脂(PEEK)压制成形邵氏硬度82HSD4735MOLON压制成形邵氏硬度78HSD4735DEVLON压制成形邵氏硬度80HSD4735尼龙NYLONG66棒材邵氏硬度78HSD3627.5丁腈橡胶压制成形邵氏硬度65HSD5.0三元乙丙EPDM压制成形邵氏硬度70HSD4.0硅橡胶压制成形邵氏硬度65HSD3.0氟橡胶压制成形邵氏硬度60HSD8.0碳石墨浸四氟乙烯压制成形邵氏硬度80~100HSD3021铸铁HT200铸造170~220HBS3020ZCuZn38黄铜ZCuZn40Pb2铅黄铜黄铜ZCuZn38MnPb2锰黄铜80~85HBS8020ZCuZn16Si4硅青铜95~100HBS10025ZCuSn6Zn6Pb3锡青铜8015ZCuAl10Fe3铝青铜≥110HBS8025ZCuAl10Fe3Mn2铝青铜ZCuAl10Fe4Mn4铝青铜120~170HBS10035青铜磷青铜铸造压延10025碳钢ZG230-450铸造170HBS1003035CrMoAlA800~1000HV30080渗氮钢38CrMoAlA渗氮2Cr133Cr13不锈钢Cr17Ni2铸造压延堆焊200~300HBS250451Cr18Ni9Ti耐酸钢Cr18Ni12Mo2Ti铸造压延堆焊140~170HBS15040铬基硬质合金48~51HRC15050钴基硬质合金堆焊40~45HRC25080