Korloy TCMT090204-C25 PC9030 Stainless Steel Turning Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
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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Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.