Finishing cutting insert LC2005

turningmachiningfor cast aluminum

Product overview
Mitsubishi Materials introduces the LC2005 DLC-coated grade, a turning insert developed for precision turning of non-ferrous metals, particularly aluminium alloys. The insert uses a newly engineered thin hydrogen-free DLC coating to combine high hardness with enhanced lubricity for improved machining efficiency and part quality.

Coating technology and adhesion
The LC2005 thin hydrogen-free DLC features an innovative thin-film structure that improves coating adhesion to the cemented carbide substrate and reduces delamination caused by hardness differences. This design ensures stable coating performance in demanding cutting conditions.

Wear resistance, tool life and surface finish
LC2005 provides excellent wear resistance and extended tool life, reducing tool changes and increasing productivity. The hard DLC minimizes flank wear while the smooth thin-film coating together with a sharp substrate edge produces improved surface finishes and supports tighter tolerances on precision components.

Cutting edge quality (table)
LC2005 displays a uniform cutting edge | Conventional uneven cutting edge
Comparison imagery and data show LC2005 achieves a more uniform edge and better finish compared with conventional inserts.

Applications and benefits summary
LC2005 improves machining efficiency and sustainability by extending tool life and reducing tooling consumption and downtime. It is suited to high-precision, high-productivity turning of non-ferrous materials in industries such as automotive, aerospace and precision engineering.

Available geometries

• CCET
• CCGT
• DCET
• DCGT
• VCGT
• VPGT

Technical characteristics / specifications

• Commercial designation: LC2005
• Coating: Thin hydrogen-free diamond-like carbon (DLC)
• Key properties: high hardness, enhanced lubricity, improved coating adhesion due to thin-film structure
• Performance: excellent wear resistance, reduced flank wear, longer tool life
• Surface finish: improved surface quality for precision components
• Primary materials: non-ferrous metals, especially aluminium alloys
• Applications: precision turning for automotive, aerospace and precision engineering
• Available insert geometries: CCET, CCGT, DCET, DCGT, VCGT, VPGT
• Release date: May 8, 2026