| Brittle Fracture | (english) Fracture with little or no plastic deformation. |
| Brittle Fracture 2 | (english) Fracture preceded by little or negligible plastic deformation. |
| Brittle Inter-metallic Layer | (english) An iron-zinc alloy layer formed between the steel substrate and the free zinc of galvanized coatings. |
| Brittleness | (english) The tendency of a metal or material to fracture without undergoing appreciable plastic deformation. |
| Broach | (english) A long, tapered cutting tool with serrations which,when forced through a hole or across a surface, cuts a desired shape or size. |
| Broaching | (english) Smoothing machined holes or outside surfaces of castings by drawing pushing on or more broaches (special cutting tools) through the roughed out hole. |
| Bronze | (english) An alloy containing 90% copper and 10% tin. Used for screws, wire, hardware, wear plates, bushings and springs; it is somewhat stronger than copper and brass and has equal or better ductility. |
| Bronze 2 | (english) Primarily an alloy of copper and tin, but additionally, the name is used when referring to other alloys not containing tin, for example, aluminum bronze, manganese bronze, and beryllium bronze. |
| Brown Sharp Gages | (english) A standard series of sizes refered to by numbers, in which the diameter of wire or thickness of sheet metal is generally produced and which is used in the manufacture of brass, bronze, copper, copper-base alloys and aluminum. These gage numbers have a definite relationship to each other. In this system, the decimal thickness is reduced by 50% every six gage numbers- while temper is expressed by the number of B&S gage numbers as cold reduced in thickness from previous annealing. For each B&S gage number in thickness reduction, where is assigned a hardness value of 1/4 hard. |
| Bruise | (english) A mark transferred to the strip surface from a defective process roll. Similar to dent or punchmark. |