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The state of a metal relating to its hardness or toughness produced by thermal treatment, heat treatment and quench, or cold working to bring the metal to its specified consistency.

Tempered Spring Steel Strip:

Any medium or high carbon strip steel of spring quality which has been hardened and tempered to meet specifications. When polished, it is also called “clock spring steel”; it is been ground and polished with its edges dressed.


A process of reheating quench-hardened or normalized steel to a temperature below the transformation range and then cooling at any rate desired. The primary purpose of tempering is to impart a degree of plasticity or toughness to the steel to alleviate the brittleness of its martensite.

Tensile Strength:

The breaking strength of a material when subjected to a stretching force.


An element known for its high malleability and ductility, but low tensile strength. It is mainly used as a coating on steel in tin plate and in alloys.


An element known for its malleability and ductility when pure, and high strength and good corrosion resistance in alloys.

Tool Steel:

Any high carbon or alloy steel capable of being suitable tempered for use in the manufacture of tools.


Property of resisting fracture or distortion. Usually measured by impact test, high impact values indicating high toughness.


An element known for its high tensile strength, ductility, and malleability. It promotes hardness and strength at elevated temperatures.

Tungsten Carbide:

A compound of tungsten and carbon, it is frequently imbedded in soft metals, such as cobalt.