Metal Glossary

Designed to be a quick reference guide for customers, the Cashmores glossary provides definitions of the latest metal industry terms.

Metal Glossary

Designed to be a quick reference guide for customers, the Cashmores glossary provides definitions of the latest metal industry terms.

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Concentricity

Strictly, this is the shift between the centres of the circles that are the Outside Diameter (OD) and Inside Diameter (ID/ Bore) of a round tube. Any such shift will cause a variation in wall thickness around the circumference of the tube, hence the tolerance on concentricity is determined by the wall thickness tolerance.
Concentricity

In tubular products this describes how closely the centres of the two circles that respectively describe the outside diameter and bore coincide. The separation of these two centres causes variation in wall thickness around the tube and eccentricity.
Related Terms: Eccentricity
Container

The key part of an extrusion press into which the billet is placed before extrusion. It is a hollow cylinder which is closed at one end by the die and at the other by the extrusion ram. It has to contain the substantial pressures generated during extrusion.
Controlled Stretching

Stretching, under controlled tension, of plate and shate products to a specified extension (percentage permanent set). It relieves internal stress and minimises distortion during machining as well as improving flatness and straightness.
Converting Process

The process which transforms Copper Matte into Blister Copper. By reacting the Matte with Oxygen enriched air and silica slags both the Iron and Sulphur are removed leaving Copper metal of 98% purity known as Blister Copper.
Cooking Foil
Foil, Kitchen Foil, Tin Foil

Cold rolled aluminium flat product less than 250 microns in thickness. Usage includes kitchen foil (cooking foil) and foil trays for food. Kitchen Foil is often incorrectly referred to as Tin Foil.
Copper Cathode, Cathode Copper

The Copper, of at least 99.9% purity, produced by electrolytic refining. It is the feedstock for melting most Copper alloys and their subsequent manufacturing processes.
Copper Matte

The mixture of Copper and Iron Sulphides which is the feedstock to the Converting Process that turns Chalcopyrite ore into Blister Copper.
Corrosion

Degradation of a material by chemical or electrochemical reaction with its immediate environment.
Corrosion Fatigue

Cracking, possibly initiated and certainly accelerated, in a work-piece subjected to alternating or cyclic stresses in the presence of a corrosive medium. It will cause premature, often unexpected, failure.
Related Terms: Fatigue
Corrosion Product

The residue, or product, that is formed when a corrosion reaction occurs.
CPP Plate

CPP is short for Continuously Product Plate - CPP is hot rolled plate up to 12mm thick and will have been coiled up during the production by hot rolling as compared to Quarto Plate over 12mm thick that will not have been coiled during production by hot rolling. For more information and the stock range please click on the link below.
Related Terms: Quarto Plate

More information: https://www.cashmores.co.uk/datasheets/Stainless-Steel-Stainless-Steel-Quarto-Plate-and-CPP-Plate_422.ashx

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Metal Glossary

Metal Glossary

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