There's a sticky, permanently fixed in place (which is why it's marked with the sticky symbol) at the 2nd post down from the very top of this "Scrolling - Scroll Saws" section.
It's called "Sourcing Scroll Saw Blades".
I won't say ALL the info is there, but there's LOADS of it, including metal-cutting blades (AKA jeweller's blades).
Most of the lists there are for trhe Pegas brand blades (IMO a good brand, but by no means the only one!)
AND if you look at those 3 lists you'll see full blade specs for just about ALL scroll saw blades, including scroll saw metal cutting blades, AND also blades for "Jeweller's" saws, Coping saw blades, and "Junior" hack saw blades.
Forgive me if I sound a bit testy tonight, but this question - and those VERY similar - come up regularly - I guess about once a month on average - and for that reason the Mods agreed that this sticky was put there - and that was about 2 to 3 months ago now.
All of us on this Forum were (and many still still are - me included) beginners in one way or another, and virtually all members here will help anyone out.
BUT it does get a bit wearing sometimes to be answering pretty much the same question over and over again. Hence the idea of sticky/ies.
Rant over, sorry in advance if I've upset anyone.