Aluminum Extrusions

The merchandise subject to this investigation are aluminum extrusions, regardless of form, finishing, or fabrication, whether assembled with other parts or unassembled, whether coated, painted, anodized, or thermally improved. Aluminum extrusions are shapes and forms, produced by an extrusion process, made from aluminum alloys having metallic elements corresponding to the alloy series designations published by the Aluminum Association commencing with the numbers 1, 3, and 6 (or proprietary equivalents or other certifying body equivalents). Specifically, subject aluminum extrusions made from an aluminum alloy with an Aluminum Association series designation commencing with the number 1 contain not less than 99 percent aluminum by weight. Subject aluminum extrusions made from an aluminum alloy with an Aluminum Association series designation commencing with the number 3 contain manganese as the major alloying element, with manganese accounting for not more than 3.0 percent of total materials by weight. Subject aluminum extrusions made from an aluminum alloy with an Aluminum Association series designation commencing with the number 6 contain magnesium and silicon as the major alloying elements, with magnesium accounting for at least 0.1 percent but not more than 2.0 percent of total materials by weight, and silicon accounting for at least 0.1 percent but not more than 3.0 percent of total materials by weight. The scope also includes merchandise made from an aluminum alloy with an Aluminum Association series designation commencing with the number 5 (or proprietary equivalents or other certifying body equivalents) that have a magnesium content accounting for up to but not more than 2.0 percent of total materials by weight. [Full scope continues with detailed exclusions and specifications as published in Appendix I]