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1、ISO 2768-1线性尺寸和角度未注公差的相应等级要求：直线度平面度圆度、垂直度、对称度、平行度同轴度ISO2768-2 形状位置的未注公差的相应等级要求大型砂铸件尺寸公差 DIN 1686 1Lngdeml/ Lngenmae / length 线性长度公差 GTB-18-30-50-80-120-180-250-315-400-500-630-800-1000-1250GTB204,57,588,59101111121314151618GTB194,54,755,566,577,588,59,5101112GTB182,933,23,43,74,14,44,755,566,577,5GT
2、B171,81,922,12,32,52,72,93,13,33,53,84,14,4GTB161,11,21,31,41,51,61,81,922,12,32,42,62,8GTB150,850,9511,11,21,31,41,51,61,71,81,922,2Tykkelse/ Dickenabmae / thickness 厚度公差-6-10-10-30-50-80-120-180GTB20-7,511121314GTB19-4,57,588,5910GTB18-2,54,54,755,56,5-GTB171,52,52,933,23,43,7-GTB161,51,81,81,922,
3、12,3-GTB150,9511,11,21,31,4-锻件尺寸公差要求（Forged）DIN 1684 - 1Lngdeml/ Lngenmae / length und Dickenmae/Wanddicken/ Hippen/thickness fur formgebunden 线性长度厚度公差Dick-10Dick&Lng-18-30-50-80-120-180-250-315-400-500-630-800-1000GtA17/50.91.11.31.51.92.22.52.93.23.74.14.45.05.5GTA170.750.91.11.31.51.82.02.32.62.9
4、3.23.54.04.5GTA16/50.60.70.81.01.21.31.61.82.02.22.42.73.13.6GTA160.450.550.650.80.951.11.31.51.61.82.02.22.52.8Lngdeml/ Lngenmae / length und Dickenmae/Wanddicken/ Hippen/thicknessfur nicht formgebunden非线性（非规律性）长度和厚度公差Dick-10Dick&Lng-18-30-50-80-120-180-250-315-400-500-630-800-1000GtA17/51.21.41.61
5、.92.22.52.83.23.54.04.44.75.35.8GTA171.11.21.41.61.8.12.32.62.93.23.53.84.34.8GTA16/50.91.01.11.31.51.61.82.12.32.52.73.03.43.9GTA160.750.850.951.11.31.41.51.81.92.12.32.52.83.1Bearbeitungszugaben BZ 规则形状平面度公差BIS-50-120-250-400-500-800-1000Bearbeitungszugaben BZ1.51.51.5222.53Eingeschrllnkze Bearbei
6、tungszugaben BZ (slehe Absohnitt 5) 非规则形状平面度公差BIS-50-120-250-400Bearbeitungszugaben BZ0.80.80.81焊接件公差要求ISO 13920Lngdeml/ Lngenmae / length 线性长度公差-120-400-1000-2000-4000-8000-12000-16000-2000020000-A 1 1 2 3 4 5 6 7 8 9B 2 2 3 4 6 8 10 12 14 16C 3 4 6 8 11 14 18 21 24 27D 4 7 9 12 16 21 27 32 36 40pl
7、anhed/ Geradheit und Ebenheit / regularity 非线性和规律性弧线公差-120-400-1000-2000-4000-8000-12000-16000-2000020000-E0,511,52345678F11,534,56810121416G1,535,59111620222525H2,55914182632364040Vinkelml/ Winkelma / angle 角度公差mm/m-400-10001000-400-10001000-A 20 15 10 6 4,5 3B 45 30 20 13 9 6C 1 45 30 18 13 9D 1 3
8、0 1 15 1 26 22 18GBT 1505594 冲压件未注公差 表1 未注公差冲裁尺寸的极限偏差 mm基本尺寸材料厚度公 差 等 级大于至大于至fmcv0.5310.050.100.150.20130.150.200.300.403610.100.150.200.30140.200.300.400.5540.300.400.600.8063010.150.200.300.40140.300.400.550.7540.450.600.801.203012010.200.300.400.55140.400.550.751.0540.600.801.101.5012040010.250.3
9、50.500.70140.500.701.001.4040.751.051.452.10400100010.350.500.701.00140.701.001.402.0041.051.452.102.901000200010.450.650.901.30140.901.301.802.5041.402.002.803.902000400010.701.001.402.00141.402.002.803.9041.802.603.605.00注：对于0.5及0.5以下的尺寸应标公差。表5 未注公差冲裁角度的极限偏差等级短 边 长 度，mm101025256363160160400400100010002500f100040030020015010006m130100045030020015010c200130100045030020015v表6 未注公差弯曲角度的极限偏差公差等级短 边 长 度，mm
