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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Stress

Stress is the measure of the forces acting within a deformable body or work-piece when it is under load. These forces will seek to resist any permanent change in shape of the body or work-piece until the yield point strength of the material has been exceeded.
Stress Corrosion

This is the frequently rapid, sudden, failure of normally ductile alloys when experiencing tensile stresses in certain and specific corrosive environments. These stresses may be residual internal stresses or from external loading.
Stress Corrosion

Stress Corrosion is the rapid and often abrupt failure of a normally ductile metal or alloy caused by residual or other stresses in the work-piece and in the presence of specific corroding agents. It is temperature dependent. Alpha Brasses are susceptible in atmospheres that contain Ammonia. The effect can be mitigated to some extent by a stress relieving heat treatment but, if the service conditions pose any risk of stress corrosion, an alternative alloy such as Aluminium Bronze is preferred.
Stress Corrosion Cracking

Stress Corrosion Cracking (SCC) is the rapid and often abrupt failure of a normally ductile metal or alloy caused by residual or other stresses in the work-piece and in the presence of specific corroding agents. It is temperature dependent. Austenitic stainless steels are susceptible in chloride environments temperatures above 60°C. Ferritic grades are immune to this form of attack.
Stress Relieving

An annealing heat treatment used to reduce internal stresses in steel after fabrication.
Related Terms: Annealing
Stretcher Grip Marks

Transverse indentations left by the gripper jaws of the stretching machine on the ends of a product.
Stretcher Levelling, Streching

A term used to describe both the levelling of rolled materials and the straightening of extruded and drawn materials by imparting sufficient permanent extension to remove distortion.
Stretcher Strain Markings

These are permanent surface distortions that can occur on stretching. They can appear as either flamboyant patterns or Lüders lines. Their onset and extent depends on the type of material and the degree of stretching.
Related Terms: Lüders Lines, Stretcher Levelling, Streching
Super Annealing

An annealing cycle for heat treatable alloys that utilises a slow, controlled, cooling rate to produce a structure with maximum ductility and the minimum tendency to natural ageing.
Surface Bloom

A general term for any surface discolouration caused by thermal treatment or from exposure to moist atmospheres.
Swaging

A cold forging process in which the dimensions of a tube are altered by blows delivered rapidly against its outside diameter. An internal mandrel is usually used.

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Metal Glossary

Metal Glossary

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