| Burn-On-Sand | (english) Sand adhering to the surface of the casting that is extremely difficult to remove. |
| Burn-Out | (english) Firing a mold at a high temperature to remove pattern material residue. |
| Burning | (english) (1) Permanently damaging a metal or alloy by heating to cause either incipient melting or intergranular oxidation. (2) In grinding getting the work hot enough to cause discoloration or to change the microstructure by tempering or hardening. |
| Burning 2 | (english) Heating a metal beyond the temperature limits allowable for the desired heat treatment, or beyond the point where serious oxidation or other detrimental action begins. |
| Burnishing | (english) Developing a smooth finish on a metal by tumbling or rubbing with a polished hand tool. |
| Burnishing 2 | (english) Smoothing surfaces through friction between the material and material such as hardened metal media. |
| Burnt | (english) A definition applying to material which has been permanently damaged by over-heating. |
| Burnt Rubber | (english) Small or large black spots that generally show up on surface and are generally caused by pickling steel too hot. |
| Burnthrough | (english) In shell molding, resin burned out too soon. |
| Burr | (english) The very subtle ridge on the edge of strip steel left by cutting operations such as slitting, trimming, shearing, or blanking. For example, as a steel processor trims the sides of the sheet steel parallel or cuts a sheet of steel into strips, its edges will bend with the direction of the cut. |