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Piano wire
Material for piano strings / From Wikipedia, the free encyclopedia
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For the song by Sharon Needles, see Battle Axe (album). For the song by Slayer, see Repentless.
Piano wire, or "music wire", is a specialized type of wire made for use in piano strings but also in other applications as springs. It is made from tempered high-carbon steel, also known as spring steel, which replaced iron as the material starting in 1834.
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Piano wire has a very high tensile strength to cope with the heavy demands placed upon piano strings; accordingly, piano wire is also used for a number of other purposes, including springs, surgical uses, and in special effects.