Mitsubishi CNMG120408-MP MC6015 High-Speed Steel Insert (10pcs)
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CNMG120408-MP MC6015
High-Speed Steel Turning | MC6015 Nano-Texture CVD | MP Medium Geometry
The Productivity Leader for Steel Turning
MC6015 Grade (Nano-Texture CVD): The MC6015 is Mitsubishi's premium high-speed steel turning grade. It features a specialized Nano-texture CVD coating that provides extreme resistance to crater wear and plastic deformation. This allows for significantly higher cutting speeds ($V_c$) compared to general-purpose grades, effectively shortening production cycles in carbon and alloy steels.
MP Chipbreaker (Medium-Positive Geometry): The MP chipbreaker is designed for the modern CNC shop. It utilizes a variable-angled land that ensures stable chip breaking even as the feed rate changes. Its "positive" rake design reduces cutting forces and heat generation, which is critical when running at the elevated speeds that the MC6015 grade is capable of handling.
0.8mm (1/32") Performance Radius: The 08 radius provides the ideal balance between surface finish quality and edge strength. It is the global standard for medium-roughing to semi-finishing operations in mass production environments.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120408-MP | 12.7 mm | 4.76 mm | 0.80 mm |
| Imperial | CNMG432-MP | 1/2" | 3/16" | 0.0315" (1/32") |
High-Velocity Cutting Parameters
*MC6015 is optimized for dry or wet high-speed turning. For maximum tool life in continuous cuts, prioritize high surface speeds.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon Steel (S45C/1045) | 250 - 450 m/min | 0.15 - 0.45 mm/r | 1.00 - 4.00 mm |
| Alloy Steel (4140/SCM440) | 200 - 350 m/min | 0.15 - 0.40 mm/r | 0.80 - 3.50 mm |
Compatible Tool Holders
Maximum rigidity is essential for high-speed MC6015 cycles. Use DCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: MC6015 vs. MC6025
MC6015 (Speed Master): Use this grade for high-speed continuous turning in stable conditions. It offers superior wear resistance but is less tolerant of interruptions.
MC6025 (Universal Toughness): Switch to MC6025 if your process involves significant interrupted cuts or if the machine/setup lacks the rigidity to maintain very high surface speeds.
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