Korloy MGMN300-G CN2000 3mm Double-Ended Cermet Insert for High-Precision Steel Finishing (10pcs)
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The Original Korloy MGMN300-M CN2000 is a specialized 3.0mm Double-Ended Cermet Insert engineered for the most demanding Finishing and High-Speed Machining applications. By utilizing the CN2000 Cermet grade—a titanium-based ceramic-metal composite—this insert offers superior chemical stability and crater wear resistance compared to traditional carbide. The -M (Medium-Finishing) chipbreaker is precision-ground to provide excellent chip control at lighter depths of cut, ensuring a flawlessly smooth, mirror-like surface on steel and cast iron components.
Why Choose Cermet? CN2000 excels where carbide struggles. Its high resistance to thermal deformation and low material adhesion make it ideal for high-velocity finishing, effectively eliminating built-up edge and surface clouding.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN300-M |
| Insert Width (w) | 3.0 mm |
| Grade | CN2000 (Premium Cermet) |
| Surface Effect | Mirror Finish / High Gloss |
Core Performance Benefits:
- "Grinding-Free" Finish: Achieve surface roughness (Ra) values that often remove the need for secondary grinding operations.
- Exceptional Edge Sharpness: The ground -M geometry stays sharp longer in finishing conditions, reducing cutting pressure on delicate workpieces.
- Extreme Heat Resistance: Cermet's ceramic properties allow it to operate at much higher RPMs than coated carbide, increasing productivity.
- Extended Dimensional Life: Minimal tool wear during finishing passes ensures consistent part size across large production batches.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Carbon Steel (Finishing) | 160 - 320 m/min | 0.05 - 0.15 mm/rev |
| Alloy Steel (4140/4340) | 140 - 280 m/min | 0.04 - 0.12 mm/rev |
| Cast Iron (Grey/Ductile) | 180 - 400 m/min | 0.08 - 0.18 mm/rev |
Compatible Tool Holders:
Fits all standard 3.0mm MGEHR/L and MGIVR tool holders:
- External Holders: MGEHR 1616-3 / 2020-3 / 2525-3
- Internal Holders: MGIVR 2016-3 / 2520-3
The Finishing Choice: Cermet (CN2000) vs. Coated Carbide (NC3120)
At the 3.0mm width, using the right material for the right stage is vital:
The Finishing Expert. Optimized for high-speed finishing and mirror surfaces. Best for final dimensions. Use it where appearance and precision matter most.
The Roughing Expert. Higher toughness for heavy grooving, interrupted cuts, and general removal. Better for shock resistance but lacks the high-gloss finish of cermet.
Machinist's Pro Tip: Cermet tools like the MGMN300-M CN2000 perform best when "pushed." If you see a dull finish or vibrating marks, try increasing your cutting speed. However, never use cermet for interrupted cuts or heavy scale—it is a precision instrument, not a sledgehammer!
Packaging: 10 pieces per box.
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