인바합금 : Super Invar Alloy (for OLED Metal Mask Frame Tool) 4. Machinability Data Tool Configuratio n Surface Speed Feed Rate Rough/Finish 320 in. /min. 1. 0 in. /min. HSS Rough Milling 375 in. /min 2. 0 in. /min. HSS Finish Milling Up to 600 in. /min. 4. 0 in. /min. Tool Type Use End Mill Carbide End Mill Corn Cob) End Mill