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Nonmetallic material, or in nontechnical terms a nonmetal, refers to materials which are not metals. Depending upon context it is used in slightly different ways. In everyday life it would be a generic term for those materials such as plastics, wood or ceramics which are not typical metals such as the iron alloys used in bridges.
In metallurgy, non-ferrous metals are metals or alloys that do not contain iron (allotropes of iron, ferrite, and so on) in appreciable amounts.. Generally more costly than ferrous metals, non-ferrous metals are used because of desirable properties such as low weight (e.g. aluminium), higher conductivity (e.g. copper), [1] non-magnetic properties or resistance to corrosion (e.g. zinc). [2]
A few examples of nonmetal compounds are: boric acid (H 3 BO 3), used in ceramic glazes; [75] selenocysteine (C 3 H 7 NO 2 Se), the 21st amino acid of life; [76] phosphorus sesquisulfide (P 4 S 3), found in strike anywhere matches; [77] and teflon ((C 2 F 4) n), used to create non-stick coatings for pans and other cookware. [78]
A material property is an intensive property of a material, i.e., a physical property or chemical property that does not depend on the amount of the material. These quantitative properties may be used as a metric by which the benefits of one material versus another can be compared, thereby aiding in materials selection.
An example of an altermagnetic ordering, with the direction of the spins and the spatial orientation of the atoms alternating on the neighbouring sites in the crystal. In condensed matter physics , altermagnetism is a type of persistent magnetic state in ideal crystals .
A plastic magnet is a non-metallic magnet made from an organic polymer. Plastic magnets could be used in computer hardware such as disc drives, as well as in medical devices such as pacemakers and cochlear implants, where the organic material is more likely to be biocompatible than its metallic counterparts. [citation needed]
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hydrometers, material comparisons (ratio of density of a material to a reference material—usually water) Relative permeability = magnetostatics (ratio of the permeability of a specific medium to free space) Relative permittivity
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