<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31438435</termId><termName>aluminum alloy</termName><termType>PT</termType><termNote><![CDATA[ When not further qualified, the term refers to aluminum-copper alloy with or without small amounts of other alloying elements. Due to the influence of even tiny amounts of other elements on aluminum, there is an infinite variety of aluminum alloys. ]]></termNote><termCreatedDate>2026-03-30 20:58:10</termCreatedDate><relation><relationType>UF</relationType><termId>31438436</termId><termName>alloy, aluminium</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31438437</termId><termName>alloys, aluminium</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31438438</termId><termName>aluminium alloys</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31438439</termId><termName>alloy, aluminum</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31438440</termId><termName>alloys, aluminum</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31438441</termId><termName>aluminum alloys</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31412113</termId><termName>aluminum and aluminum alloys</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31457180</termId><termName>aluminum-silicon alloy</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31457182</termId><termName>aluminum-zinc alloy</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31457186</termId><termName>duralumin</termName><termType>PT</termType></relation></term>  </Zthes>