Have you welded your frames yourself? Or did you get someone to do them for you I will try to find out what ALS material is. I was looking at some chromoly stock for my build if I can't reuse some of the tubingback in the early models they listed the frames as chrome moly but that stopped around 1994 and it was then listed as ALS *** which I am sure some one on here will be able to tell you what you need to weld. I have had plenty of frames welded and repaired with no issues.
I was just curious to see if you got professionals to weld important projects for you and you do, as well as I do. I can cut bend, machine, modify everything but welding I get the pros to do thanks for the infoMy welding skill is not something I would pass on to anyone else. I find excellent welders and hand the important jobs off to them, the costs are minimal. Some day I may build my own just to say I did it but that would be a long way off before I would prioritize " I did it" over getting a frame that is safe and has good looking welds. thats some of my problem i have known too many excellent welders and know that it is a skill that takes experience to build. I don't see myself puttinig in the time to ever get "that good".
If you are a good welder then no worries i look forward to seeing the end results.