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.