Although glass can soften at lower temperatures, it must be heated to extremely high temperatures to melt, at which time it takes on a honey or syrup-like consistency. Glass melts at temperatures ranging from 2600 to 2800 degrees Fahrenheit, depending on its composition and whether any elements have been added to reinforce it. This temperature ranges from 1400 to 1600 degrees Celsius.
Glass melts at extremely high temperatures, but what is the temperature at which it softens? When the temperature reaches around 1250 degrees F, the material becomes pliable enough to reshape. However, it will not necessarily have softened consistency and may still be susceptible to breakage if you apply too much effort at this point. When the glass hits 1350 degrees Fahrenheit, the surface should be just beginning to melt. It is possible to fuse glass pieces together at this point. When glass is heated to roughly 1450 degrees Fahrenheit, it begins to lose its shape. When determining “at what temperature does glass melt,” consider if you want the glass to be entirely liquefied or merely have the consistency of taffy, which is suitable for some purposes.
At room temperature, glass is considered cool. It does not begin to change composition until it reaches a temperature of 700 to 900 degrees. To avoid cracking or shattering the glass, the process of cooling it from these extremely high temperatures must be done gently.