特点：以锰为主要合金元素的铝合金,不可热处理强化,耐腐蚀性能好,焊接性能好。塑性好。(接近超铝合金)。That’s not a comforting imagined, particularly when you consider just how much time we spend on the floor in the course of everyday life.Finding only your mattress cleaned and never your carpet or vice ver