Polyduranide is a metallic material used in 24th century construction.

Polyduranide was used aboard Galaxy-class starships as part of the spaceframe, computer control surfaces, warp nacelles and antimatter generators. (TNG reference: Star Trek: The Next Generation Technical Manual)

Polyduranide computer control surfaces were also used aboard Sovereign-class starships. (TNG novels: Ship of the Line, Q-Zone, Q-Strike)

Gamma-strengthened polyduranide is used to form the casing of Starfleet tricorders. (DS9 reference: Star Trek: Deep Space Nine Technical Manual)

Polyduranide was used to create baseball bats, although the Cestus III baseball league decided to use wooden bats when they established their team in 2371. Benjamin Sisko asked Kasidy Yates whether the teams used polyduranide or wood. (DS9 episode: "Family Business")

Golf clubs were also made of polyduranide at the time. (VOY episode: "Vis à Vis")

The Trabe used polyduranide in the construction of their starships. (VOY episode: "Initiations")

In 2368, energy conduits in a cargo bay on the USS Enterprise-D ruptured and ignited the polyduranide inside a bulkhead, creating a plasma fire that threatened the lives of Geordi La Forge and Beverly Crusher. (TNG episode: "Disaster")

In 2381, polyduranide was among several materials found in a vast debris field in the Delta Quadrant by the USS Aventine. (ST - Destiny novel: Mere Mortals)

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