Glossary
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Glossary

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Term Definition
Beryllium copper

Billet
A hot-worked semifinished product suitable for subsequent working by such methods as rolling, forging, extruding, etc.
Blank
A piece from any wrought product intended for subsequent fabrication by such operations as forming, bending, cupping, drawing, hot pressing.
Blanking
The process of cutting metal blanks by a die and punch set in a press, or by sawing or shearing.
Blister
A raised spot on the surface of the metal caused by expansion of gas in subsurface zone during thermal treatment.
Block Marks
Short longitudinal scratches introduced during rewinding of sheet or foil, resulting from relative movement between adjacent wraps of the coil.
Bloom
A semifinished hot rolled product, rectangular or square in cross section produced on a blooming mill.
BMS

Bottom Draft
Taper or slope in the bottom of a forged depression to assist the flow of metal toward the sides of the depressed area.
Bow
Longitudinal curvature of rod, bar, shapes, and tube.
Brass
Any copper alloy with zinc as the principal alloying element, with or without small quantities of some other elements.
Brazing
A joining process wherein coalescence is produced by heating to suitable temperatures above 800 F. and by using a non-ferrous filler metal having a melting point below that of the base metals. The filler metal is distributed between the closely fitted surfaces of the joint by capillary attraction.
Brazing Rod
A rolled, extruded, or cast round filler metal for use in joining by brazing.
Brazing Sheet
Sheet of a brazing alloy or sheet clad with a brazing alloy on one or both sides.
Brazing Wire
Wire for use as a filler metal in joining by brazing.
Bright Annealing
Annealing in an atmosphere controlled to prevent surface discoloration and maintain a bright finish.
Broken Edge
Edge containing cracks, splits, or tears.
Broken Surface
A surface having innumerable minute cracks running normal to the direction of working.
Bronze
Originally a term for copper alloys having tin as the only or principal alloying element. In modern usage the term "Bronze" is seldom used alone, and the terms "Phosphor Bronze" or "Tin Bronze" is used for indicating copper-tin alloys. In fact, the term "Bronze," together with a suitable modifying adjective has in recent years been extended to apply to any of a great variety of copper alloys.
Buck
A device on which flat wire and strip are wound to facilitate handling and shipping.
Buckle
A distortion of the surface of sheet such as a bulge or a wave, usually transverse to the direction of rolling.
Buffing
A mechanical finishing operation in which fine abrasives are applied to a metal surface by rotating fabric wheels for the purpose of developing a lustrous finish.
Burnishing
A fabrication method of securing a smooth finished surface by slight deformation with highly polished tools.
Burr
A thin ridge of roughness left by a cutting operation such as slitting, trimming, shearing, blanking, sawing, etc.
Burred Edge
A thin turned down edge on sheet or foil resulting from shearing.
Bursting Pressure
The internal pressure required to burst tubes or other hollow products.
Bus Bar
A bus conductor of rectangular or square cross section of any dimension.
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