My local supplier does not stock Hobbyweld 5 and he claims that many of his customers use Hobbyweld 15 (which he does sell) as a perfectly good substitute.
Has anyone any experience of using Hobbyweld 15 on steel less than 4 mm thick?
I find there is a lot of leeway with the gases, less you go beyond the extreme.
If you have a decent welder and can weld it should not be an issue for general work.
Specialised stuff may be slightly different.
