Korloy MGMN250-G H01 2.5mm Uncoated Mirror-Finished Insert for Aluminum (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy MGMN250-G H01 is a premium 2.5mm Double-Ended Grooving Insert specifically engineered for Aluminum, Copper, and Non-Ferrous Metals. For materials that are prone to stickiness and chip welding, the H01 Uncoated Grade provides a critical advantage: an ultra-polished "mirror" top surface. This smooth finish allows chips to slide away instantly, preventing built-up edge (BUE) and ensuring a high-gloss, scratch-free surface on your workpieces.
The Mirror Finish Expert: Unlike coated inserts, the H01 grade features a razor-sharp cutting edge that is not rounded by coating layers. This makes it exceptionally effective for precision grooving in soft materials like Aluminum 6061, 7075, and various plastics.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN250-G |
| Insert Width (w) | 2.5 mm |
| Grade | H01 (Uncoated Mirror-Polished Carbide) |
| Best For | Aluminum, Copper, Brass, Plastics |
Core Performance Benefits:
- Anti-Sticking Technology: The mirror-polished rake face eliminates chip welding, crucial for the long-term stability of 2.5mm grooving.
- Ultra-Sharp Edge: Uncoated carbide allows for a much sharper cutting radius, reducing cutting forces and heat in soft metals.
- Material Versatility: Excellent for all non-ferrous applications, including high-purity copper and abrasive reinforced plastics.
- Double-Ended Value: Two precision-ground edges provide double the tool life per insert.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Aluminum Alloys | 200 - 800 m/min | 0.05 - 0.20 mm/rev |
| Copper / Brass | 150 - 400 m/min | 0.05 - 0.15 mm/rev |
| Plastics (Delrin/PVC) | 100 - 500 m/min | 0.08 - 0.25 mm/rev |
Compatible Tool Holders:
Must be used with standard 2.5mm MGEHR/L external holders:
- External Holders: MGEHR 1616-2.5 / 2020-2.5 / 2525-2.5
The Aluminum Guide: H01 vs. PC9030
When machining non-ferrous metals, the presence of a coating can actually be a disadvantage:
Uncoated & Sharp. Best for soft metals. Coating particles can "contaminate" aluminum and cause friction. H01 stays cool and clean.
Coated & Tough. Essential for Stainless and Steel, but the coating adds slight edge-rounding which can lead to chip welding in soft aluminum.
Machinist's Pro Tip: For the best results with MGMN250-G H01 in aluminum, use a high cutting speed ($V_c$) and plenty of emulsion or mist lubricant. The 2.5mm width allows for aggressive plunging while maintaining a mirror-finish floor.
Packaging: 10 pieces per box.
Korloy MGMN250-G H01 price, 2.5mm aluminum grooving tool, best insert for copper parting off, uncoated carbide insert for plastic turning, MGMN250-G H01 speed and feed for aluminum
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.