CNMG120408‑MM 1125 Grade Tungsten Carbide Indexable Turning Insert Compatible with Sandviks Coromant For CNC Metal Lathe Turning Machining
CNMG120408-MM 1125 is a high-performance 80° rhombic turning insert belonging to the Coromant T-Max® P series, specifically designed for semi-finishing of steel, stainless steel, and superalloys. Combining advanced PVD TiAlN coating technology with a cemented carbide substrate, it achieves excellent wear resistance and thermal shock resistance while ensuring cutting edge toughness, making it ideal for precision machining requirements in high-end manufacturing sectors such as aerospace and energy equipment.
| Parameter Category | Specific Specification |
|---|---|
| Insert Shape | Rhombic 80° |
| Inscribed Circle Diameter (IC) | 19.05 mm |
| Insert Thickness (s) | 6.35 mm |
| Corner Radius (re) | 1.5875 mm |
| Number of Cutting Edges | 2 |
| Coating Type | PVD TiAlN Coating |
| Substrate Material | Cemented Carbide (HC) |
| Chip Breaker | MM (Optimized Chip Control) |
| Package Quantity | 10 inserts/pack |
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Multi-material Machinability:ISO application range covers P15-P45 (steel), M15-M35 (stainless steel), S15-S35 (superalloys), providing a one-stop solution for semi-finishing of various difficult-to-machine materials.
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Superior Wear & Heat Resistance:PVD TiAlN coating maintains stable hardness at temperatures above 500°C, increasing crater wear resistance by 30% compared to traditional coatings and extending tool life.
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Optimized Chip Control:MM chip breaker design enables efficient chip evacuation through special edge geometry, reducing chip entanglement especially in stainless steel machining and minimizing downtime for chip cleaning.
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Cutting Edge Security:Gradient combination structure of cemented carbide substrate and coating effectively prevents edge chipping under low-speed heavy-load or light interrupted cutting conditions, improving machining stability.
The following are starting reference parameters, which can be adjusted according to the actual workpiece material hardness:
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Steel (175 HB):vc = 75 m/min, ap = 10 mm, fn = 0.8 mm/r
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Stainless Steel (200 HB):vc = 65 m/min, ap = 10 mm, fn = 0.8 mm/r
Widely used in aerospace (turbine blades, engine components), energy equipment (wind power shaft parts), construction machinery (hydraulic cylinders) and other fields, especially suitable for semi-finishing of nickel-based superalloys such as Inconel 718 and Hastelloy 276.
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