welding 316S to 317L compatible?
welding 316S to 317L compatible?
(OP)
Is there any problem welding 317L to 316S? This is for a 95,000 gallon fish oil tank where we are trying to use both grades of material, and I am concerned about the compatibility, as the consequences of an oil spill of this size are substantial (I am on the coastline of the Bering Sea) Thank you for any and all input.





RE: welding 316S to 317L compatible?
RE: welding 316S to 317L compatible?
As per welding 317L to 316 using 317L /ER317L filler the formation of intergranualar carbides is likely to occur. Therefore a soluntion anneal is required after welding to restores its' intergranular corrosion resistance. A typical solution anneal would be 1900/2100F (1040/1150C) for one hour thickness followed by a rapid quench (water quench if possible).
To possible eliminate the solution anneal, you might want to use a stabilized grade 347 (stabilized w/ Columbium) or 321 (stabilzed w/ titanium) to avoid carbide precipitation. Basically , these elements titanium and Columbium have a preferentially ties up the carbon so that chromium carbides are not formed.
RE: welding 316S to 317L compatible?
RE: welding 316S to 317L compatible?
The two materials are readily weldable but sensitization of the 316 is inevitable, although there are techniques to mitigate sensitization.