| Bottom Die | (english) The stationary half-die. |
| Bottom Roll | (english) Submerged roll in the pot used to keep the strip submerged in the pot. |
| Bottom Up | (english) Reversing the wrap of a coil putting the top surface on the bottom. |
| Bow | (english) The lateral deviation from straightness |
| Box | (english) Interanl (female) threaded end. |
| Box Annealing | (english) Annealing a metal or alloy in a sealed container under conditions that minimize oxidation. In box annealing a ferrous alloy, the charge is usually heated slowly to a temperature below the transformation range, but sometimes above or within it, and is then cooled slowly; this process is also called close annealing or pot annealing. |
| Box Annealing 2 | (english) A process of annealing a ferrous alloy in a closed metal container, with or without packing materials, in order to minimize the effects of oxidation. The charge is normally heated slowly to a temperature below the transformation range, but occasionally above or within it, and then is slowly cooled. |
| Brake | (english) A piece of equipment used for bending sheet; also called a bar folder. If operated manually, it is called a hand brake; if power driven, it is called a press brake. |
| Brake Press Bending | (english) An operation which produces various degree bends when fabricating parts from steel. |
| Brale | (english) A diamond penetrator, conical in shape, used with a Rockwell hardness tester for hard metals. |