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Phosphor Bronze

Martin’s traditional phosphor bronze strings are the choice of many professional musicians worldwide, and especially those with Martin guitars. They are offered in five gauge ranges from extra light to medium to suit most any size guitar or playing style.

The wound strings have a tin plated, steel core wrapped with phosphor bronze. These phosphor bronze wrap wires are made of copper (92%) and tin (8%) - more copper than the 80/20 bronze wound strings – plus about 1% phosphor, a deoxidizing agent. The increased copper content mellows the tone compared to the 80/20 bronze and increases the tonal longevity of these strings. The plain steel strings are silvered steel.
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