螺栓拧紧力矩查询和预紧力计算

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1、螺栓拧紧力矩查询和预紧力计算螺栓规格拧紧力矩（牛.米）性能等级5.6性能等级8.8性能等级10.9M65-76-1011-14M812-1519-2422-29M8x114-1821-2824-31M1024-3035-4743-53M10x1.2528-3241-5348-59M10x130-3642-5451-58M1242-5360-7280-101M12x1.544-5666-8288-107M12x1.2547-6072-8594-114M1472-8796-126144-175M14x1.580-96106-132160-204M16108-127156-200199-234M16

2、x1.5116-144168-204214-252M18156-180192-226240-260M18x1.5162-192204-240250-300M20216-243312-372384-439M20x1.5240-264324-384433-480另外还可以根据T=kDF来计算拧紧扭矩，其中，k是扭矩系数，D是公称直径，F是螺栓预紧力。附:螺栓预紧力对照表强度等级4.86.88.810.912.9最小破断强度392 Mpa588 Mpa784 Mp a941Mpa1176 M pa材质一般构造用钢机械构造用碳钢铬铝合金钢模铬铝合金钢镍铬合金钢螺栓对边mm扭距值N.mM6116一12M

3、8138一1516一30M101718一3036一63M1219304770110M14226998137165225M162498137206247363M1827137206284341480M2030176296402569480M2232225333539765911M24363144706869811176M2741441637102914721764M3046588882122519622352M33507351127147020602450M36559801470176424532940M396011761764215629433626M426515192352274438264

4、606M457017642744313644155390M487522543430392055926664M528027444116470465738330M5685352851495978843710290M60904018597877421079113230M6495499874488820M681005684852610780M721056468980012642M7611073501078014710M8011581431225018130M8512088201372022050M90130105841617024500M1001451372020090M1101551636624990M1201751989429890M125180注：1、上表为德国工业标准；表中扭矩值为螺栓达到屈服极限的70%时所测定；2、表中锁紧力矩为最大值；实际工作时，建议锁紧力矩为表中数拇（7080）%。