Korloy CNMG120404-HA PC9030 Sharp Stainless Steel Finishing Insert (10pcs)
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The Original Korloy CNMG120404-HA PC9030 (ANSI Standard: CNMG 431) is a high-performance PVD-coated insert specifically engineered for precision finishing of Stainless Steel and Heat-Resistant Super Alloys (HRSA). Featuring the ultra-sharp HA chipbreaker, this insert provides a superior shearing action that minimizes cutting resistance and heat generation—the two primary causes of work hardening in materials like 316L and Titanium. The PC9030 grade ensures maximum resistance to adhesive wear and built-up edge (BUE).
The Finishing Specialist: HA geometry is much sharper than GS or HS series, making it the ideal choice for thin-walled parts, long slender shafts, and medical-grade stainless steel components where surface integrity is paramount.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | CNMG120404-HA |
| ANSI Code | CNMG 431 |
| Grade | PC9030 (Premium PVD for Stainless & HRSA) |
| Chipbreaker | HA (Ultra-Sharp Precision) |
Core Performance Benefits:
- Extreme Sharpness: Razor-sharp edge shears through gummy materials to provide a burr-free, mirror-like surface finish.
- Minimized Cutting Force: Reduces pressure on the workpiece, preventing vibration and chatter in unstable or delicate setups.
- Superior Coating Stability: The PC9030 PVD coating offers high chemical stability, essential for machining nickel-based alloys and 300-series stainless.
- Precision Tolerance: The R0.4 nose radius ensures exceptional dimensional control for intricate finishing operations.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Stainless (304/316) | 100 - 180 m/min | 0.05 - 0.15 mm/rev | 0.1 - 1.5 mm |
| Titanium Alloys | 40 - 90 m/min | 0.05 - 0.12 mm/rev | 0.1 - 1.0 mm |
| Inconel / HRSA | 25 - 50 m/min | 0.05 - 0.10 mm/rev | 0.1 - 0.8 mm |
Compatible Tool Holders:
For precision finishing, we recommend high-stability D-Type or M-Type holders:
- External Turning: PCLNR/L 2020K12 / PCLNR/L 2525M12
- Internal Boring Bars: S25S-PCLNR12 / S32T-PCLNR12
Finishing Pro-Tip: HA vs. HS Geometry
Choosing the right sharpness for your stainless steel job:
Best for heat-sensitive materials and super alloys. The sharpest possible edge to prevent work hardening.
Best for standard stainless steel finishing where you need a bit more edge strength for stable production.
Machinist's Insight: If you are machining 316 Stainless and the tool is "pushing" the material rather than cutting it, switch to the HA geometry to restore precision and surface quality.
Packaging: 10 pieces per box.