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postheadericon Punch Pressure for Air Impact Markers

Review CMT's punch pressure chart to calculate tons pressure needed to punch mild steel plates.

Tons pressure to punch mild steel plate*

Metal Gage
Thick in Inches
1/8"
3/16"
1/4"
5/16"
3/8"
7/16"
1/2"
9/16"
5/8"
11/16"
3/4"
13/16"
7/8"
15/16"
1
20 .036 .35 .53 .71 .88 1.1 1.2 1.4 1.6 1.8 1.9 2.1 2.3 2.5 2.7 2.8
180 .048 .47 .71 .94 1.2 1.4 1.7 1.9 2.1 2.4 2.6 2.8 3.1 3.3 3.5 3.8
1/16 or 16 .060 .059 .89 1.2 1.5 1.8 2.1 2.4 2.7 2.9 3.2 3.5 3.8 4.1 4.4 4.7
14 .075 .74 1.1 1.5 1.9 2.2 2.6 2.9 3.3 3.7 4.1 4.4 4.8 5.2 5.5 5.9
12 .105 1 1.6 2.1 2.6 3.1 3.6 4.1 4.7 5.2 5.7 6.2 6.7 7.2 7.7 8.3
1/8 or 11 .120 1.2 1.8 2.4 3.0 3.5 4.1 4.7 5.3 5.9 6.5 7.1 7.7 8.3 8.8 9.4
10 .135 2.0 2.7 3.3 4.01 4.6 5.3 6.0 6.6 7.3 8.0 8.6 9.3 10 10.6
3/16 .187 2.8 3.7 4.6 5.5 6.5 7.4 8.3 9.2 10.2 11.1 12 12.9 13.8 14.8
1/4 .250 4.9 6.2 7.4 8.6 9.8 11 12.3 13.5 14.8 16 17.2 18.5 19.7
5/16 .312 7.8 9.2 10.8 12.3 13.8 15.4 16.9 18.4 20 21.5 23 24.6
3/8 .375 11.1 13 14.8 16.6 18.5 20.3 22.1 24 25.8 27.7 29.5
1/2 .50 17.2 19.7 22.1 24.6 27.1 29.5 32 34.4 36.9 39.4
5/8 .625 30.8 33.8 36.9 40 43 46.1 49.2
3/4 .750 40.6 44.3 48 51.9 55.4 59
7/8 .875 51.6 56 60.2 64.6 69
0 1.000 64 68.8 73.68 78.7

*Does not include recommended 25% safety factor