公制紧固件的扭矩-张力关系表

2023/3/2 9:07:26
公制紧固件的扭矩-张力关系表
注意:下表所列所有数据仅为建议材质,任何人都可以自愿选用。在开发这些信息的过程中,法思诺竭尽全力呈现最精确的数据。使用扭矩-张力转换公式时需要极为小心,扭矩只是张力的一个间接指标,紧固件过松或过紧可能导致昂贵的设备失效或人员受伤。
公称直径(mm)螺距公制4.6级公制8.8级公制10.9级公制12.9级
夹紧力(lbs)旋紧扭矩in-lbs适于尺寸小于等于M8ft-lbs适于M10及以上夹紧力(lbs)旋紧扭矩in-lbs适于尺寸小于等于M8ft-lbs适于M10及以上夹紧力(lbs)旋紧扭矩in-lbs适于尺寸小于等于M8ft-lbs适于M10及以上夹紧力(lbs)旋紧扭矩in-lbs适于尺寸小于等于M8ft-lbs适于M10及以上
K=0.15K=0.17K=0.20K=0.15K=0.17K=0.20K=0.15K=0.17K=0.20K=0.15K=0.17K=0.20
40.73337.9in-lbs8.9in-lbs10.5in-lbs85820.3in-lbs23in-lbs27in-lbs122829in-lbs32.9in-lbs38.7in-lbs143633.9in-lbs38.4in-lbs45.2in-lbs
50.853815.91821.2138740.946.454.6198558.666.478.1231968.577.691.3
617632730.736.1196869.77992.9281699.8113.11333291116.6132.1155.4
71109545.351.360.32822116.6132.2155.540391671892234720195221260
81.25138965.674.487.53580169.1191.6225.451232422743235987283320377
101.5220010.8ft-lbs12.3ft-lbs14.4ft-lbs567127.9ft-lbs31.6ft-lbs37.2ft-lbs811539.9ft-lbs45.2ft-lbs53.2ft-lbs948446.7ft-lbs52.9ft-lbs62.2ft-lbs
121.75319718.921.425.2824048.755.164.91179269.678.992.81378181.492.2108.5
142437930.234.240.21128977.888.1103.716154111.3126.1148.418879130147.4173.4
1625943475362153201211371612192417319623025622202229269
182.57301657386194711721952302693423927031831477279316372
202.5928691104122247632442763253425633738244940034394446525
222.511509125141166306923323774434245746052161349619537609716
24313372158179211356594214775614932958266077757649681771908
27317428232262309464746177008236428885496811397513299811311331
303.5212663143564195670983794911167844811581312154491680135315341804
333.5263104274845707016011391291151997055157617862101113425184220872455
3643098254962273282620146316581951114291202422942699133569236626813154
当螺母或预置孔的保证载荷大于或等于螺丝的最小极限拉伸强度时,以上扭矩值才能达到。夹紧力的估计值为指定螺栓保证载荷的75%。
扭矩值计算公式:T=K*D*F,其中
K=0.15,适用于润滑的情况
K=0.17或K=0.20,适用于无涂层且干燥的情况