TONNAGE CALCULATOR NOTE OF CAUTION: Calculations are approximate. Tonnage requirements and ability to safely punch required hole depends on quality of equipment and tooling. Piranha is not responsible for inaccuracies or results. Due to extreme pressures generated when punching, care must be taken to not exceed the strength of the tooling. For example, when punching through 60,000 psi material, NEVER attempt to punch a hole smaller in diameter than material thickness. Additional safety margins must be considered if tensile strength of material is higher than 60,000 psi. DIRECTIONS: Calculator will accept fractional numbers in decimal format only For material less than 1 inch enter in the following format: 0.5 / DECIMAL EQUIVALENT: ROUND HOLE: Hole diameter in inches: Example: 1.125 or 0.75 or 0.81 (note: for values less than one, enter 0 before decimal) Material thickness in inches: Example: 1.125 or 0.75 or 0.81 (note: for values less than one, enter 0 before decimal) Material tensile strength: PSI (pounds/square inch) SQUARE/RECTANGULAR HOLE: Length of first side in inches: Example: 1.125 or 0.75 or 0.81 (note: for values less than one, enter 0 before decimal) Length of second side in inches: Example: 1.125 or 0.75 or 0.81 (note: for values less than one, enter 0 before decimal) Material thickness in inches: Example: 1.125 or 0.75 or 0.81 (note: for values less than one, enter 0 before decimal) Material tensile strength: PSI (pounds/square inch) OBLONG HOLE: Length of slot in inches: Example: 1.125 or 0.75 or 0.81 (note: for values less than one, enter 0 before decimal) Width of slot in inches: Example: 1.125 or 0.75 or 0.81 (note: for values less than one, enter 0 before decimal) Material thickness in inches: Example: 1.125 or 0.75 or 0.81 (note: for values less than one, enter 0 before decimal) Material tensile strength: PSI (pounds/square inch)