In the United States throughout 2003, Luxfer Gas Cylinders conducted a trade-in program for older Luxfer scuba cylinders made from 6351 aluminum alloy from 1972 through June 1988. That trade-in program ended on December 31, 2003.
Between 1987 and 1988, Luxfer Gas Cylinders discontinued use of 6351 aluminum alloy and began using a proprietary version of 6061 aluminum alloy for all its aluminum cylinder models manufactured in the United States.
the United States by ensuring a fast, safe, efficient, accessible and
convenient transportation system that meets our vital national interests
and enhances the quality of life of the American people, today and into