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Pyrophoric Alloys

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Pyrophoric Alloys

Name given to certain alloys which possess the property of throwing off sparks when scratched or struck. Such alloys usually contain the metal cerium, since all the metals of the cerium group possess this pyrophoric property to some extent. Such alloys are mainly used for the "flints" in automatic lighters and flint guns. A well-known alloy of this type contains cerium plus about 30% of iron. Besides, the use of cerium-iron alloys, metal containing tin, lead, zinc, cadmium, silicon etc., have been patented for pyrophoric uses.

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