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Punching Tonnage Chart


MATERIAL THICKNESS IN MILD STEEL
HOLE 1/8" 1/4" 3/8" 1/2" 5/8" 3/4" 7/8" 1"
1/8" 1              
1/4" 3 5            
3/8" 4 8 11          
1/2" 5 10 15 20 25      
5/8" 6 13 19 25 31 38    
3/4" 8 15 23 30 38 45 53  
7/8" 9 18 26 35 44 53 61 70
1" 10 20 30 40 50 60 70 80
1-1/8" 11 23 33 45 56 68 78 90
1-1/4" 13 25 38 50 63 75 88 100
1-3/8" 14 28 41 55 69 83 96 110
1-1/2" 15 30 45 60 75 90 105 120
1-5/8" 16 33 49 65 81 98 114 130
1-3/4" 18 35 52 70 87 105 122 140
2" 20 40 60 80 100 120 140 160
2-1/4" 23 45 67 90 112 135 157 180
2-1/2" 25 50 75 100 125 150 175 200
2-3/4" 28 55 82 110 132 165 187 220
3" 30 60 90 120 150 180 210 240
3-1/4" 33 65 97 130 162 195 227 260
3-1/2" 35 70 105 140 180 210 245 280
3-3/4" 38 75 112 150 187 225 262 300
4" 40 80 120 160 200 240 280 320
4-1/2" 45 90 135 180 225 270 315 360
5" 50 100 150 200 250 300 350 400
5-1/2" 55 110 165 220 275 330 385 440
6" 60 120 180 240 300 360 420 480