Korloy TCMT090204-C25 PC9030 Stainless Steel Turning Insert (10pcs)
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The Original Korloy TCMT090204-C25 PC9030 is a specialized Triangular Indexable Turning Insert engineered for the challenging task of machining Stainless Steel (M-Group) and Heat-Resistant Alloys. The PC9030 PVD Grade is Korloy’s top-tier solution for preventing "built-up edge" and notch wear, while the C25 Chipbreaker is optimized for medium-to-finishing applications, ensuring excellent chip evacuation even in gummy materials.
The Stainless Specialist: PC9030 is specifically formulated for the toughness required in interrupted cuts and low-to-medium speed stainless steel turning. It provides a significant leap in tool life when machining 304, 316, and Duplex stainless steels.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Designation | TCMT090204-C25 |
| Corner Radius (r) | 0.4 mm |
| Grade | PC9030 (Premium PVD for Stainless) |
| Chipbreaker | C25 (Medium-Finish) |
Core Performance Benefits:
- Exceptional Heat Resistance: The advanced PVD coating maintains edge hardness under the high thermal loads typical of stainless steel machining.
- C25 Geometry: Designed to break chips effectively at small-to-medium depths of cut, preventing long, stringy chips from damaging the workpiece finish.
- Notch Wear Resistance: Specialized substrate prevents the common "notching" effect at the depth-of-cut line when machining work-hardening alloys.
- High Edge Toughness: Ideal for small boring bars where stability can be an issue.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Stainless Steel (304/316) | 80 - 180 m/min | 0.05 - 0.20 mm/rev | 0.3 - 2.0 mm |
| Duplex Stainless Steel | 50 - 120 m/min | 0.08 - 0.18 mm/rev | 0.5 - 1.5 mm |
| Alloy Steel (Steel Turning) | 100 - 220 m/min | 0.08 - 0.25 mm/rev | 0.5 - 2.5 mm |
Compatible Tooling Systems:
Precision matched for 09-sized triangular holders:
- Internal Boring Bars: S08K-STUCR09 / S10K-STUCR09 / S12M-STUCR09
- External Toolholders: STGCR 1212H09 / STGCR 1616H09
Machinist Tip: PC9030 vs PC5300
Selecting the right PVD grade for your stainless steel project:
Best for Precision. Engineered specifically for M-class (Stainless) materials. It has a smoother surface to prevent "gummy" material adhesion. Excellent for finishing and medium cuts.
The Generalist. Use PC5300 if you are switching frequently between Steel, Stainless, and Cast Iron. It is tougher for heavy interrupted cuts but lacks the specific chemical resistance of PC9030 for high-end stainless finishing.
Pro Advice: When machining 316L, don't be afraid to increase the depth of cut (ap) slightly to get under the work-hardened layer from the previous pass. Use plenty of high-quality coolant!
Packaging: 10 pieces per box.
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