glossary

=glossary=

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 * ====alloys==== ||  || An alloy is a material in which elements are deliberately added, or raised above their normal level, to improve the materials properties ||
 * ====case hardening==== ||  || Case hardening or surface hardening is hardening the surface of the metal by infusing other elements forming a harder alloy ||
 * ====composite materials==== ||  || Composite materials are a combination of two or more materials which together have significantly different properties from their original individual properties ||
 * ====crystalline==== ||  || A regular arrangement in the structure (atoms or molecules) of the material ||
 * ====ferrous metals==== ||  || Ferrous metals are metallic alloys of the element Iron (Fe) for example cast irons, carbon and alloy steels, stainless steels and coated steel. Steel contains mainly Iron (Fe) and a small amount of Carbon (C) ||
 * ====non-ferrous metals==== ||  || Non-ferrous metals do not contain the element Iron (Fe) for example Brass which is an alloy of Copper (Cu) and Zinc (Zn) ||
 * ====opaque==== ||  || Light does not penetrate opaque materials ||
 * ====refractories==== ||  || A refractory material is one that retains its strength at high temperature ||
 * ====specific gravity==== ||  || Specific Gravity (SG) is the ratio of the density of a material to the density of water ||
 * ====tempering==== ||  || Tempering is a controlled reheating technique for metals to "toughen" the metal. ||
 * translucent ||  || In translucent materials light passes through them diffusely (scattered) ||
 * transparent ||  || Transparent materials allow light to pass through the material ||
 * viscoelastic ||  || Viscoelastic materials exhibit both viscous and elastic characteristics when undergoing deformation. ||
 * vitrification ||  || To make hard like glass ||