Korloy TNMG160408-HA PC9030 (TNMG 332-HA) Sharp & Tough Stainless Steel Insert (10pcs)
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The Original Korloy TNMG160408-HA PC9030 (ANSI: TNMG 332-HA) represents the perfect synergy between Extreme Sharpness and Coated Durability. Designed for Gummy Stainless Steels (304L, 316L), Titanium, and Nickel-Based Superalloys, this insert uses the ultra-positive HA Geometry to shear through material instead of "plowing" it. The PC9030 PVD Coating ensures the edge stays protected against high thermal loads, while the 0.8mm radius provides the strength needed for semi-roughing and medium turning.
Solve the "Gummy" Material Challenge: The HA chipbreaker's sharp, high-rake design is a game-changer for materials that tend to stick to the tool. It significantly reduces cutting heat and friction, eliminating built-up edge and leaving a superior surface finish even on large, difficult-to-machine components.
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 | PC9030 (Premium PVD for Stainless/HRSA) |
Core Performance Benefits:
- Reduced Cutting Pressure: The sharp HA edge bites into the workpiece easily, making it ideal for low-rigidity setups or thin-walled parts.
- Thermal Protection: PC9030 PVD coating acts as a heat shield, preventing the cutting edge from softening during long cuts in heat-resistant alloys.
- Enhanced Edge Life: The 0.8mm radius (332) offers more "meat" at the tip than the 0.4mm version, allowing for higher feed rates and better resistance to chipping.
- 6-Edge Economy: Double-sided triangular design provides maximum productivity for your tooling investment.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Gummy Stainless (304/316L) | 90-190 m/min (295-625 sfm) | 0.15-0.35 mm/rev (.006-.014 ipr) | 0.5-3.5 mm (.020-.138") |
| Titanium Alloys (Gr 5) | 40-85 m/min (130-280 sfm) | 0.12-0.25 mm/rev (.005-.010 ipr) | 0.4-2.5 mm (.016-.100") |
| Inconel / Monel | 20-55 m/min (65-180 sfm) | 0.10-0.20 mm/rev (.004-.008 ipr) | 0.3-2.0 mm (.012-.079") |
Compatible Tooling Systems:
Pairs perfectly with standard 16-size (4-size ANSI) negative holders:
- External Lathe Holders: MTJNR 2020K16 / MTJNR 2525M16 (ANSI 12-4B / 16-4D)
- Internal Boring Bars: S25S-WTJNR16 / S32T-WTJNR16
Machinist Tip: The "Anti-Vibration" Advantage
When to deploy the 0.8mm HA-PC9030:
Best for Roughing & Medium Cuts. If your workpiece is large or has a rough surface, the 0.8mm radius is essential. It provides the toughness to handle inconsistent depths of cut while the HA geometry ensures you aren't fighting excess cutting pressure.
Use NC3120 for carbon steel and alloys. Stick to PC9030 for anything in the M (Stainless) or S (Heat Resistant) family. PC9030's PVD coating is much thinner and sharper, which is the only way to effectively cut materials that work-harden easily.
Pro Advice: When machining Inconel or Titanium, heat is your enemy. Keep your cutting speed (Vc) on the lower end of the range but keep your feed (fn) positive. Letting the tool dwell or rub will cause immediate edge failure and part hardening.
Packaging: 10 pieces per box.
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