For example, additional elements can be added to iron to improve its properties, thereby creating an iron based alloy.
2.
Parts of some traditional gongs, notably the bosses of some " nipple " gongs, are made from iron based alloys.
3.
Amorphous metal cores with special magnetic properties can even be employed in such articles as security tags and related devices . Cobalt and iron base alloys are used to produce anti-shoplifting labels and security papers.
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