Tensile Strength (PSI) Material Thickness (inches) - T Die Width (inches) - W Punch Radius (inches) K Factor Die Ratio (W/T) Bend Radius - Inside Estimated Air Bend Radius Bend Radius - Outside Estimated Air Bend Radius Minimum Between Bends Minimum Leg Length for Die Width Tonnage Required (per foot of Bend) Total Tonnage for Bend Overall Lengthft Tonstn Constants (Press Brake Tonnage): Bend Length (inches) Friction Coefficient Calculated Value of Force Bend Angle (degrees)