Aluminum (metal) requires a 400 F temperature for 45-65 seconds for time. Remember to always remove any protective film before pressing.
However, there are exceptions when we’re talking about jewelry, plastic lunch boxes, and cell phone case covers, all of which have an aluminum insert metal. With this particular metal, the gauge thickness is thin. We call these “insert products” because when you take the sublimation metal and apply it to the substrate, it gives you a finished product in two parts. For these inserts, it is 30 seconds for aluminum and/or metal.