Welding to 1898 era steel
Welding to 1898 era steel
(OP)
A client wants to add canopies to his building. The canopies would be attaching to steel lintels supporting multi-wythe brick walls. The lintels consist of two 12"x20.5 'C' shapes with 3/8'' plates top & bot. According to historical records construction was completed in 1898. The earliest ASTM spec I can find is ASTM A9, dated 1900. It lists Fy=35 ksi and Fu=60 ksi for 'Medium' Steel. Should I spec 60xx welds?






RE: Welding to 1898 era steel
RE: Welding to 1898 era steel
RE: Welding to 1898 era steel
RE: Welding to 1898 era steel
Dik
RE: Welding to 1898 era steel
web and try to break it off. Try a few licks the hard way and then bend
it off the easy way, it should break in the weld.
If you have and feel inclined here is a CS electrode (Cronotron 321, not SS) that I've used to weld some vary old and crappy steels, The welder will love it and probably take any leftovers home.
http://www
RE: Welding to 1898 era steel
RE: Welding to 1898 era steel
You should have a chemical analysis performed on a sample of each member that is going to be welded to ensure the carbon equivalency is relatively low and the S and P are below 0.04% to minimize hot cracking problems.
You can deal with sulfur is you make sure the manganese content of the weld is 10 times higher than the sulfur content of the steel. I don't know of an easy fix for excessive P other than to use low hydrogen practices, i.e., E7018 that has been stored in a heated electrode oven.
Best regards - Al
RE: Welding to 1898 era steel
Secondly, I agree that you need some chemical analysis to find out if it is weldable, but welding a tab to it and see if you can break it off will undoubtly tell you more.
RE: Welding to 1898 era steel
RE: Welding to 1898 era steel
RE: Welding to 1898 era steel
RE: Welding to 1898 era steel
Dik
RE: Welding to 1898 era steel
ht
RE: Welding to 1898 era steel