Korloy CCMT120404-HMP PC9030 Large Stainless Steel Turning Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy CCMT120404-HMP PC9030 represents the peak of stability for high-precision stainless steel turning on larger workpieces. As the largest in the CCMT family, the size-12 substrate provides maximum heat dissipation and structural rigidity. Combined with Korloy's industry-leading PVD coating (PC9030), this insert is engineered to eliminate built-up edge and deliver a mirror-like finish on tough materials like 304, 316, and duplex stainless steel.
Stability Guide: Machining large diameters or deep bores? Learn how to choose the right insert size: CCMT06 vs 09 vs 12: Stability Explained.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | CCMT120404-HMP |
| Grade | PC9030 (PVD Stainless Specialist) |
| Nose Radius | 0.4 mm (Precision Finishing) |
| Material Suitability | All Stainless Steels (M10-M25) |
Core Performance Benefits:
- Maximum Rigidness: The 12mm size is ideal for larger boring bars and external holders, minimizing tool deflection in heavy-duty stainless finishing.
- Advanced Thermal Barrier: PC9030 PVD coating maintains edge sharpness while resisting the extreme heat generated by machining gummy stainless alloys.
- HMP Chipbreaker: Specifically designed for stainless steel, ensuring small, manageable chips even at light depths of cut, preventing workpiece scratching.
- Precision R0.4 Radius: Delivers exceptional surface smoothness while providing more edge strength than micro-radii.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 110 - 190 m/min | 0.08 - 0.22 mm/rev | 0.5 - 2.5 mm |
| Duplex / PH Stainless | 60 - 120 m/min | 0.06 - 0.18 mm/rev | 0.5 - 2.0 mm |
Compatible Tool Holders:
Due to its size, this insert is paired with heavy-duty SCLCR/L type holders to handle larger torque:
- External Turning: SCLCR2020K12 / SCLCR2525M12
- Boring Bars (Internal): S25S-SCLCR12 / S32T-SCLCR12
Stainless Specialist: PC9030 vs. PC5300
Optimizing your tool life in stainless steel:
Primary choice for continuous finishing and precision boring. Highest surface quality.
Better for interrupted cuts, scaly surfaces, or manual lathes with less rigidity.
Machinist's Tip: For the CCMT12 size, ensure your tool holder is in good condition, as the increased leverage can magnify any shank wear.
Packaging: 10 pieces per box.
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.