Kaiser Aluminum. has filed a patent for a 6xxx series aluminum alloy composition with specific weight percentages of Si, Cu, Mg, Zn, Cr, Fe, Mn, Zr, and Ti. The alloy allows for high post-consumer recycled material content, reducing environmental impact while meeting engineering requirements. GlobalData’s report on Kaiser Aluminum gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Kaiser Aluminum, Ceramic membrane fuel cells was a key innovation area identified from patents. Kaiser Aluminum's grant share as of January 2024 was 81%. Grant share is based on the ratio of number of grants to total number of patents.
Eco-friendly 6xxx series aluminum alloy composition
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The patent application US20230416879A1 discloses a novel 6xxx series aluminum alloy with specific weight percentages of various elements, including Si, Cu, Mg, Zn, Cr, Fe, Mn, Zr, and Ti. The alloy is designed to contain a high percentage of scrap material, exceeding 75% or even 90%, making it environmentally friendly and cost-effective. Additionally, the extruded, forged, or rolled products manufactured from this alloy exhibit superior mechanical properties, with a yield tensile strength greater than 295 MPa or 320 MPa. These products also demonstrate excellent machinability performance, achieving a B grade or better in the ASM machinability test. The thickness of the products can range from 0.25 to 10 inches, catering to various industrial applications.
The patent further details methods for manufacturing the 6xxx series aluminum alloy, involving steps such as casting, homogenizing, preheating, hot working (extrusion, forging, or rolling), water quenching, stretching, and artificially aging. Different variations of the manufacturing process are provided, depending on the desired properties of the final product. For instance, one method includes hot rolling after preheating to a specific temperature range, while another method involves extrusion at a different temperature range followed by drawing. These manufacturing methods ensure the production of high-quality aluminum alloy products with tailored mechanical characteristics suitable for diverse end uses.
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