Steel Powder, Granular -200 mesh
-200 mesh. [Fe + C] Silvery-gray powder.
This is uncoated steel powder is great for small fountains, some sparkler formulas and other applications where delicate sparks are desirable.
Sold by the pound.
It is the carbon in steel, which makes the pretty, yellow-orange branching sparks.
This powder should be coated with linseed oil if you are going to store your devices for longer than a month. Linseed oil prevents the steel from corroding in pyrotechnic mixtures.