Bluesaberleather

Hey all, new here. Did some homework and research from this site, while informative and relevant to the question at hand, I could not find any info on what steels make good strikers for firesteels. I'm currently working a piece of leaf spring and it's coming along but read somewhere that they don't produce an adequate amount of sparks and that 80Crv2 would be better. Seen O1 and O2 but I'm not experienced with either of those and I've even seen some 10XX steels. So... is there a best steel or is it really just using a known HC steel, heat treat and maybe a temper?