List of work materials Gr. Materials Trade Mark Structure Machinability Index AISI-ASTM W.-Nr DIN Cobalt based superalloys Haynes 188 (pipe) 1.0 Nickel based superalloys Inconel X750 (precipitation) 1.0 N07750 2.4669 NiCr 15 Fe 7 TiAl Nickel based superalloys Inconel 718 (forged) 1.0 N07718 2.4668 NiCr19Fe19NbMo Nickel based superalloys Nimonic 115 1.0 Nickel based superalloys Waspalloy (forged) 1.0 N07001 2.4654 NiCr20Co14MoTi Cobalt based superalloys Haynes 25 0.9 Cobalt based superalloys Haynes 188 (forged) 0.9 heat resistant super alloy Nickel based superalloys Udimet 500 0.9 NiCr18cCoMoAlTi S3 (HRSA) Nickel based superalloys Udimet 700 0.9 NiCo15Cr15MoAlTi low machinability (35-45 HRC) Nickel based superalloys Nimonic 90 0.7 Nickel based superalloys Nimonic 91 0.7 Nickel based superalloys Nimonic 101 0.7 Nickel based superalloys Mar-M 247 0.7 NiCo10W10Cr9AlTi Nickel based superalloys Mar-M 200 0.6 NiW13Co10Cr9AlTi Cobalt based superalloys H 531 0.4 Nickel based superalloys Rene 95 0.4 Cobalt based superalloys Air Resist 0.3 Grade 1 265-G1 TiAl2Sn4Zr2MoSi Grade 2 265-G2 TiAl2Sn4Zr6Mo 13 HRC Grade 3 265-G3 3.7055 Ti 99.6 15 HRC Grade 9 3.7195 Ti3Al2.5V TiAl7Mo4 3.7115 TiAl5Sn2.5 low and medium alloy 3.7124 TiCu2.5 S4 Titanium 3.7155 TiAl6Zr5Mo0.5 good machinability 3.7164 TiAl6V4 3.7165 TiAl6V4 ELI — TiAl5Mo4Sn4Si0.5 3.7175 TiAl6V6Sn2 3.7185 TiAl4Mo4Sn2 3.7025 Ti 99.8 3.7035 Ti 99.7a 23 HRC Grade 4 265-G4 36 HRC Grade 5 3.7164 medium and high alloy 36 HRC Grade 6 Ti5Al2.5SN S5 Titanium 34 HRC 6242 4975 TiAl2Sn4Zr2MoSi medium machinability 39 HRC 6246 TiAl2Sn4Zr6Mo TiV10Fe2Al3 30