existing steel weldability
 

existing steel weldability
our office is working in a number of existing buildings, 1900-1930's, and would like a procedure for determining the weldability of what we assume to be a7 or a9 steel.
a good source of information is "the procedure handbook of arc welding" by the lincoln electric co., cleveland oh. good luck!
drill a few holes and send to a lab for analysis.
believe the aws code has guidelines.....if not, contact them.........american welding society.....
in general welding should be possible with proper procedure to account for chemistry........we welded to many old bridges when i was with the railroad, built during early 1900's and earlier........
of course, you should verify the chemistry of the steel for any critical welding.........the necessary welding procedures should be explained in aws code or one of their publications.....