Korloy SCMT09T304-HMP NC3030 Steel Semi-Finishing Turning Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy SCMT09T304-HMP NC3030 is a high-stability Square (7° Positive) Turning Insert, specifically engineered for Steel (P-Group) machining in challenging conditions. Featuring the NC3030 CVD Grade, this insert offers superior toughness, making it the ideal choice for interrupted cuts or setups with less-than-perfect rigidity. The -HMP (Highly Medium Performer) chipbreaker provides excellent chip control across a range of semi-finishing operations, ensuring a high-quality surface finish and reliable tool life.
Superior Toughness: NC3030 is designed to prevent sudden edge failure. If you are experiencing chipping during interrupted cuts or when machining raw steel surfaces, the enhanced coating adhesion and tougher substrate of NC3030 provide the security you need.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | SCMT09T304-HMP |
| IC Size / Thickness | 9.525 mm / 3.97 mm |
| Corner Radius | 0.4 mm |
| Grade | NC3030 (Tough CVD for Steel) |
Core Performance Benefits:
- Interrupted Cut Excellence: Designed to handle shock loads during non-continuous turning operations.
- HMP Geometry: Wave-shaped rake face ensures consistent chip breaking even at varying depths of cut.
- Anti-Chipping Technology: Advanced CVD coating provides strong adhesion between the substrate and coating layer.
- Low Cutting Force: The 7° positive clearance makes it perfect for internal boring and small-diameter work.
Recommended Cutting Parameters (Steel):
| Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel (S45C) | 140 - 280 m/min | 0.10 - 0.30 mm/rev | 0.5 - 3.0 mm |
| Alloy Steel (4140) | 120 - 230 m/min | 0.10 - 0.25 mm/rev | 0.5 - 2.5 mm |
| Structural Steel | 150 - 300 m/min | 0.12 - 0.35 mm/rev | 0.8 - 3.0 mm |
Compatible Tool Holders:
Precision fit for standard 9.525mm IC boring bars and external tools:
- External Holders: SSDC 1212 / 1616 / 2020 Series
- Internal Boring Bars: S12M-SSDC09 / S16Q-SSDC09 / S20R-SSDC09
Machinist Tip: NC3030 vs NC3020
When to choose the Toughness-focused NC3030:
Best for Reliability. Use this when cutting parts with hex shapes, holes, or keyways (interrupted cuts). It handles vibrations better than NC3020.
Best for Speed. Optimized for smooth, continuous turning. It offers higher wear resistance at maximum spindle speeds but is more prone to chipping if the cut is interrupted.
Pro Advice: If your lathe setup has a long overhang or the workpiece is prone to chatter, NC3030 paired with the HMP geometry will provide the most stable machining experience.
Packaging: 10 pieces per box.
Korloy SCMT09T304-HMP price, NC3030 vs NC3120 grade, interrupted cut turning insert for steel, SCMT 09T304 cutting speed alloy steel, boring bar inserts for unstable setups
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.