Korloy TNMG160408-HA H01 (TNMG 332-HA) Polished Aluminum Turning Insert (10pcs)
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The Original Korloy TNMG160408-HA H01 (ANSI: TNMG 332-HA) is a high-performance, double-sided Triangular Turning Insert specifically engineered for high-efficiency machining of Aluminum Alloys, Copper, Brass, and Plastics. The H01 Uncoated Grade utilizes an ultra-sharp micro-grain substrate, while the HA Chipbreaker features a Mirror-Polished (Buffed) surface. This 0.8mm radius version provides the edge strength needed for high-feed applications and heavy material removal in non-ferrous metals.
Engineered for Productivity: The R0.8 (1/32") corner radius allows for significantly higher feed rates and deeper cuts compared to the 0.4mm version. Combined with the buffed rake face, it ensures rapid chip evacuation without any risk of built-up edge (BUE) or material welding.
Technical Specifications (Metric & Imperial):
| ISO Designation | TNMG 160408-HA |
| ANSI Designation | TNMG 332-HA |
| Inscribed Circle (IC) | 9.525 mm / (3/8") |
| Thickness (S) | 4.76 mm / (3/16") |
| Corner Radius (r) | 0.8 mm / (1/32") |
| Grade | H01 (Mirror Polished Uncoated Carbide) |
Core Performance Benefits:
- Enhanced Edge Security: The R0.8 radius is ideal for roughing and interrupted cuts in non-ferrous workpieces.
- Mirror-Polished HA Geometry: Reduces friction to almost zero, ensuring a high-gloss surface finish and preventing chip clogging.
- Double-Sided Value: Features 6 precision-ground cutting edges for the most cost-effective aluminum turning.
- Broad Material Range: Performs exceptionally well on 6061, 7075 aluminum, pure copper, brass, and even high-density plastics like Delrin.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Aluminum Alloys (Low Si) | 400-1000 m/min (1310-3280 sfm) | 0.15-0.45 mm/rev (.006-.018 ipr) | 0.5-5.0 mm (.020-.197") |
| Copper / Brass | 200-500 m/min (655-1640 sfm) | 0.12-0.35 mm/rev (.005-.014 ipr) | 0.5-4.0 mm (.020-.157") |
| High Silicon Aluminum | 150-300 m/min (490-985 sfm) | 0.10-0.30 mm/rev (.004-.012 ipr) | 0.5-3.0 mm (.020-.118") |
Compatible Tooling Systems:
- External Lathe Holders: MTJNR 2020K16 / MTJNR 2525M16 (ANSI 12-4B / 16-4D)
- Internal Boring Bars: S25S-WTJNR16 / S32T-WTJNR16 / S40U-WTJNR16
Machinist Tip: The "Speed is King" Rule
Optimizing TNMG160408 for aluminum production:
Roughing & High Feed. This is your go-to insert for clearing material quickly. The 0.8mm radius allows you to increase the feed rate (fn), which helps break the chip even in soft aluminum alloys.
Precision Finishing. Use the 0.4mm radius version only for the final pass if you need to reach tight corners or if you are machining small-diameter parts prone to vibration.
Pro Advice: For the best results in 6000 or 7000 series aluminum, run the spindle as fast as your machine allows. High surface footage (Vc) combined with the H01 polished surface creates a "cold cut" effect, resulting in a mirror-like part finish.
Packaging: 10 pieces per box.
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