Description Used for shallow grooving, precision ground with sharp edge. These inserts are used in standard internal threading tools for 16IR inserts, can also be used in left hand external tools 16EL type. Grade T350 is NANO-TiAlSiN coated with a substrate of high wear resistance micro-grain carbide and is our preimium grade for all types of steel and stainless also good for cast iron and other materials first choice for general use. This PVD coated grade covers P25, M25, K30, S15, H10 range of materials, suitable for dry cutting. General Cutting parameters Material Hardness HB Cutting Speed VC: m/min Feed mm/rev Application Choice Non alloyed steel 0-0.45% C 125-170 70-100 0.03-0.05 Good Low alloyed steel 180-350 50-90 0.03-0.05 Good High alloyed steel 200-325 40-65 0.03-0.05 Good Corrosion resistant steel 200 55-80 0.03-0.05 Good Stainless – Ferritic 200-330 35-90 0.03-0.05 Good Stainless – Austenitic 180-200 30-80 0.03-0.05 Good Stainless – Cast Ferritic 200-330 30-80 0.03-0.05 Good Stainless – Cast Austenitic 200-330 30-70 0.03-0.05 Good Grey cast iron 180-260 50-60 0.03-0.05 OK Spheroidal cast iron 160-260 60-100 0.03-0.05 OK Malleable / Tempered iron 130-230 50-80 0.03-0.05 OK Aluminium Wrought Alloys 60-100 200-500 0.03-0.05 OK Aluminium Castings Si<12% 80-90 100-300 0.03-0.05 OK Aluminium Alloys Si 12%-23% 130 100-200 0.03-0.05 OK Bronze & Brass 90-100 80-150 0.03-0.05 OK Iron Based Hi-temp Alloys 200-280 HB 200-280 20-25 0.03-0.04 Good Nickel or Cobalt Based 250 HB 250 15-20 0.03-0.04 Good Nickel or Cobalt Based 30-58 HRC 350 15-20 0.03-0.04 Good Pure Titanium 400Rm 40-60 0.03-0.05 Good Titanium Alpha Beta Alloys 1050Rm 15-30 0.03-0.05 Good
