I'd go with Snarly's as well. Obviously very fine brushed effects if that's the look you want (never see that in real swords, but NM). One thing you might do is create a separate mat zone for the edges so they can have different qualities (either more reflective, or deeper brush marks to suggest a coarse stone used for sharpening... also helps to have the edges 'glint' if they have a different reflect value).

Iron is blue grey. Swords are usually a mix of iron and steel. Steel is more 'silvery'... shift the iron colour more towards white. Made reflective, your blade is currently looking OK for steel, or add a touch of blue.