Standard Number Last version Description Status A 19 1936 Quenched-and-Tempered Carbon-Steel Axles, Shafts, and Other Forgings for Locomotives and Cars Replaced by A 236 /no materials/ A 63 Alloy Steel Forgings for Locomotives and Cars Replaced by A 237 /no materials/ A 105/A 105M 2005 Carbon Steel Forgings for Piping Applications /1/ A 133 Alloy-Steel Forgings for Locomotives and Cars Withdrawn 1941 /no materials/ A 136 Forge-Welded Steel Pipe Withdrawn 1945 /no materials/ A 181/A 181M 2006 Carbon Steel Forgings, for General-Purpose Piping /2/
