Translations:GregTech 6/Smelting/30/en

The rate of temperature increase is inversely proportional to the amount of mass stored in the Crucible; the more material thrown into a Crucible, the slower it will heat up; conversely, the less material there is the faster it will heat up. Some alloys (such as Iron) have a smaller mass than the sum of their parts, so the contents will begin to heat more quickly upon reaching the temperature at which the alloy is formed. The Heat rate of a given Burning Box is constant, but temperature change depends on the mass.