Razorweld Cut Chart

ive noticed nozzle diameters, kerf widths, and head clearances are different throughout some of the settings from ss, to aluminum, to ms. is it safe to say they are for different sized consumables/torches etc? the only information ive found for my pro (have the UBHY45-6CC13 hand torch) settings were 1" nozzle diameter, .055 kerf, .04 head clearance. sorry just trying to get my machine right without wasting a bunch of material. its been a journey learning how to do this all.