Korloy CCMT120408-HMP NC3030 Heavy-Duty Steel Turning Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy CCMT120408-HMP NC3030 is a heavy-duty turning insert engineered for maximum impact resistance in steel applications. As a large size-12 insert with a robust 0.8mm nose radius, it is specifically designed to handle heavy roughing, large depths of cut, and severe interrupted machining conditions where edge reliability is the top priority.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | CCMT120408-HMP |
| Grade | NC3030 (Maximum Toughness CVD) |
| Nose Radius | 0.8 mm (Maximum Edge Strength) |
| Application | Heavy Roughing, Interrupted Cuts, Forged Steel |
Core Performance Benefits:
- Ultimate Impact Resistance: The NC3030 grade features a specialized shock-absorbing substrate, preventing catastrophic tool failure during heavy interrupted cuts.
- High Metal Removal Rate: The R0.8 radius and thick size-12 geometry allow for aggressive feed rates and increased depths of cut, boosting production efficiency.
- Reliable Chip Breaking: The HMP geometry effectively controls thick chips during roughing operations, preventing chip entanglement and heat buildup.
- Edge Security: Best-in-class performance when machining raw material with hard "skin" (scale) or non-uniform shapes.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel (HB180-280) | 120 - 260 m/min | 0.15 - 0.45 mm/rev | 0.8 - 4.5 mm |
| Alloy Steel (HB280-350) | 100 - 200 m/min | 0.12 - 0.40 mm/rev | 0.8 - 4.0 mm |
Compatible Tool Holders:
For maximum rigidity under heavy loads, pair this CCMT 12 insert with standard SCLCR/L type holders (Size 12):
- External Turning: SCLCR2020K12 / SCLCR2525M12 / SCLCR3232P12
- Boring Bars (Internal): S25S-SCLCR12 / S32T-SCLCR12
Quick Guide: NC3020 vs. NC3030
Choosing the right grade for your heavy steel job:
- Best for: Stable, high-speed continuous cutting.
- Focus: Longer tool life in clean materials.
- Best for: Severe interrupted cuts and vibration.
- Focus: Absolute security against edge chipping.
Machinist's Tip: This R0.8 NC3030 model is our strongest CCMT12 insert for roughing out steel parts with irregular shapes.
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.