Kennametal SNMX454T0820 KY3500 Ceramic Turning Inserts – Box of 10 NEW– High-Speed Cast Iron MachiningUp for sale is a box containing 10 brand-new Kennametal SNMX454T0820 inserts in premium grade KY3500. These are genuine, unused ceramic inserts (silicon nitride-based, uncoated) from Kennametal's Kendex™ / KYON™ series—perfect for high-productivity dry turning of gray cast iron and ferritic ductile cast iron. Key Specs & Features:
Geometry: SNMX454T0820 – Rhombic negative rake, 90° corner, T-land edge prep (0.08 mm × 20° chamfer for tough/interrupted cuts).
Grade KY3500: Micro-grain Si3N4 ceramic; excellent hot hardness, thermal shock resistance, wear resistance. ISO K10–K30 / ANSI C2 equivalent.
Primary Use: Light to medium turning on cast iron (e.g., engine blocks, rotors, manifolds). High speeds (400–1000 m/min), dry machining preferred for max tool life.
Edge Prep: T0820 – Strong protective chamfer to resist chipping on scale or interruptions.
Box Condition:new – No damage, original packaging with labels intact (see photos for exact markings).
Quantity: Full box of 10 inserts.
Condition:
Brand new, never used
Perfect for CNC lathe operators, foundries, machine shops, or resellers stocking premium ceramics.
No chips, cracks, or wear—ready to install.
Why these inserts? KY3500 ceramics deliver exceptional performance in cast iron at aggressive parameters, reducing cycle times and costs vs. carbide. This geometry with T-land is ideal for real-world shop conditions.