Korloy CNMG120408-HA H01 Polished Aluminum Turning Insert (10pcs)
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The Original Korloy CNMG120408-HA H01 (ANSI Standard: CNMG 432) is a high-performance, uncoated carbide insert precision-engineered for Aluminum and Non-Ferrous Metals. The H01 grade features a specialized sub-micron substrate with a mirror-polished rake face to minimize friction and prevent aluminum welding (built-up edge). With its robust 0.8mm (1/32") nose radius and ultra-sharp HA chipbreaker, this insert is the ultimate choice for high-speed semi-finishing and medium turning where surface brilliance and tool longevity are critical.
Superior Finish: The combination of a razor-sharp edge and a polished surface allows for high-speed cutting with minimal heat generation, resulting in an exceptional surface finish on soft, gummy metals.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | CNMG120408-HA |
| ANSI Code | CNMG 432 |
| Grade | H01 (Mirror-Polished Uncoated Carbide) |
| Application | Aluminum, Copper, Brass, Plastic, Wood |
Core Performance Benefits:
- Anti-Sticking Technology: The mirror-polished surface allows chips to flow effortlessly, preventing material adhesion even in high-speed dry or wet cutting.
- Enhanced Edge Strength: The 0.8mm radius provides the durability needed for medium cutting and light roughing while maintaining a sharp shearing action.
- Reduced Cutting Forces: High-positive HA geometry reduces the load on the machine spindle and prevents vibration in thin-walled workpieces.
- Versatile Performance: Outstanding results in everything from 6061-T6 aluminum to high-purity copper and engineering plastics.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Wrought Aluminum (6061/7075) | 350 - 900 m/min | 0.15 - 0.45 mm/rev | 0.5 - 5.0 mm |
| Cast Aluminum (Si < 10%) | 250 - 700 m/min | 0.12 - 0.35 mm/rev | 0.8 - 4.5 mm |
| Copper / Yellow Brass | 180 - 450 m/min | 0.10 - 0.30 mm/rev | 0.5 - 3.5 mm |
Compatible Tool Holders:
For high-speed aluminum turning, we recommend rigid D-Type or M-Type holders:
- External Holders: PCLNR/L 2020K12 / PCLNR/L 2525M12 / DCLNR/L 2525M12
- Internal Boring Bars: S25S-PCLNR12 / S32T-PCLNR12 / S40T-PCLNR12
Machinist's Guide: H01 vs. K10/K20 Unpolished
Why the mirror finish makes a difference:
The ultra-smooth surface is mandatory for aluminum to prevent built-up edge. It results in a "chrome-like" finish on the workpiece.
Often used for wood or general cast iron. When used on aluminum, the microscopic roughness can lead to chip welding and poor finish.
Pro Tip: Due to the 0.8mm radius, this insert can handle a feed rate up to 0.45mm/rev. Always use high-pressure coolant if available to help evacuate the large volume of chips produced at these speeds.
Packaging: 10 pieces per box.
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.