### Calculate Molding Clamp Tonnage for Plastic

Typical tonnage factors can range from 2 to 8 tons per square inch, depending on the material. For example, if we have a 6" X 6" part, the surface area is 36 square inches. Let''s further assume that our material calls for a 5X mold clamp factor. 36 times 5 equals 180, so based on our calculations up to this point, we will need to run these parts on an injection molding machine capable of