Carbide End Mills Iron, Steel, Stainless. IRON STEEL STAINLESS CHIP LOAD (IPT, BASED ON CUTTER DIAMETER) MATERIAL: GRADE: SFM: 1/8" 3/16" 1/4" 3/8" 1/2" 5/8" 3/4" 1" Ductile Iron: Gray Cast Iron: 100400 ... INCONEL 600/625, Nickel 200270, Monel 400405: : Titanium Alloy:, 8Al1 Mo1V ...