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Impact Test:

Test designed to determine, the resistance of metal to breakage by impact, usually by concentrating the applied stress to a notched specimen.

Inclusion:

Particles of impurities that are held mechanically or are formed during the solidification or by subsequent reaction within the solid metal.

Induction Hardening:

A process of hardening a ferrous alloy by heating it above the transformation range by means of electrical induction, and then cooling as required.

Ingot:

A casting for subsequent rolling or forging.

Intermediate Annealing:

An annealing treatment given to wrought metals following cold work hardening for the purpose of softness prior to further cold working.

Iron:

A magnetic metal characterized by its high tensile strength, ductility and malleability.