Sheet Fabricated Aluminum Wheels for Smaller Passenger Cars 790712
The developed lightweight wheels having seamless rim made of 5083 sheet range from 13 X 4.5 which weighs about 3.6 kg (7.9 lb) to 14 X 6 which weighs about 4.7 kg (10.4 lb).
These are from about 15 kg (6.8 lb) to about 20 kg (9.1 lb) per set lighter than steel production wheels.
The wheels composed of stamped spider and seamless rim are joined by
MIG welding and then stabilized by thermal treatment.
Therefore, these not only meet the performance requirements on dynamic cornering/radial fatigue test (SAE J328a), impact test (SAE J175), push out test and nut fastening test (JASO 608), but also have enough stress-corrosion resistance.