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 IRONWORKER PUNCH TONNAGE GUIDELINES- pdf printable chart

 Ironworker punching guidelines tonnage requiements for punching round and shaped holes.  This chart is used for mild steel and other metal material types.  Standard shape holes are oblong, square and hexagonals.  Metal fabricators will need to check the tonnage on the ironworker model to be used to make the machine are enough tonnage.  The general rule of thumb is to not punch a hole that is smaller than the material thickness.  Thank you to Cleveland Steel Punch for the different guidelines

Ironworker_punch_tonnage_guideline0001.jpg

 

IRONWORKER PUNCH TONNAGE GUIDELINES- pdf printable chart