Material Cutting Speed Chart Practical Machinist
Mar 28 2010 · H is the speed for HSS C is for Coated HSS 30 The row below the material type is the Cutting Speed in Feet per Minute For example Stainless Steel is cut at 60 90 fpm For a 500 HSS cutter set your spindle speed from 458 to 688 rpm Cutting Aluminum with a 1 Coated endmill set your spindle 1528 to 3820 rpm