The 10" blade on my chop saw has reached the end of its useful life. (It works fine on wood, but not so well on acetal or aluminum.) This is not a surprise; I replace these blades every year or so. This is a carbide-tipped, 90 tooth blade. I see that Oshlun makes a 100 tooth blade specifically for non-ferrous metals which has some very positive reviews.
I don't very often cut steel with the chop saw, and generally pretty thin stuff at that, but I notice that this blade's description includes: "WARNING: Never attempt to cut ferrous metals with these blades." What's the danger? The blade shatters, sending fragments everywhere? The blade life is reduced? Aluminum and iron produce thermite reaction from the heat?
Would I better off buying the 80 tooth blade for mild steel, even though I only use it for steel very infrequently?