Joined: Feb 2012
Posts: 19,362
Likes: 5,503
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Bike racks have been assembled with only bolts/rivets. Bike racks have been made from flat sheet before. I would make no assumptions about the alloy number referencing strength, stiffness or fatigue aspects, but these details are easily learned with due research. Andy