... :HRA:92.2 3)Flexural strength:3800 Long Neck Short Flute End Mill Grain Size:0.5 ... for Copper,Cast Iron,Carbon steel,and Mould steel processing.Stainless steel,Titanium Alloy , ... Tool steel ,and Heat-treated steel processing. 2 Main features ... can inclease the smoothness,reduce the rubbing coefficient, and improve the lathe efficiency ,save more production ...