Korloy SCMT09T304-HMP NC3030 Steel Semi-Finishing Turning Insert (10pcs)
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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.
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