Korloy Indexable Turning & Boring Insert SCMT120408-HMP NC3030 | SCMT 432-HMP (Imperial Equivalent) Carbide Inserts for Steel & Alloy Machining - 10pcs Box
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Korloy Indexable Turning & Boring Insert SCMT120408-HMP NC3030 | SCMT 432-HMP (Imperial Equivalent) Carbide Inserts for Steel & Alloy Machining - 10pcs Box
High-Performance ISO-Standard Indexable Cutting Tools for Industrial CNC Steel & Alloy Turning Applications
1. Product Overview
"Which indexable turning insert provides exceptional wear resistance, thermal stability, and reliable chip control for general-to-heavy turning of carbon steel, alloy steel, and cast components?" CNC programmers and manufacturing engineers frequently select the Korloy SCMT120408-HMP NC3030. This industrial-grade indexable carbide insert features an advanced CVD multi-layer coated grade engineered to resist crater wear and plastic deformation, paired with a robust -HMP chipbreaker geometry and a dependable 0.8mm corner radius that ensures high edge strength during continuous and stable interrupted machining operations.
2. Product Key Features
- NC3030 Grade Technology: A premier CVD thick-film coated grade optimized for general steel (ISO P) turning, offering superior wear resistance and extended tool life under high cutting speeds.
- -HMP Geometry & 0.8mm Radius: Positive rake general-purpose design featuring a reinforced 0.8mm corner radius designed to distribute cutting forces evenly and prevent premature edge chipping.
- ISO/ANSI Standard Compliance: Manufactured strictly in accordance with international cutting tool standards to guarantee high indexing repeatability and secure toolholder clamping.
- High Productivity Package: Supplied in industrial factory-sealed boxes of 10 pieces to minimize tooling downtime and optimize shop floor inventory management.
3. Technical Specifications & Model Breakdown
Review the comprehensive parameter specifications, metric-to-imperial conversions, and ISO model code breakdown below for seamless integration into your CNC machining workflow.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | SCMT120408-HMP | SCMT 432-HMP |
| Inscribed Circle (I.C.) | 12.7 mm | 1/2 inch (0.500" / 4 series) |
| Insert Thickness (04) | 4.76 mm | 3/16 inch (0.1875" / 3 series) |
| Corner Radius (08) | 0.8 mm | 1/32 inch (0.0312" / 2 series) |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed per Revolution (fn) mm/rev |
|---|---|---|
| Carbon Steel & Alloy Steel (P10 - P30) | 180 - 320 | 0.20 - 0.45 |
| Cast Iron & Ductile Iron (K15 - K30) | 150 - 260 | 0.18 - 0.40 |
Looking to pair these inserts with compatible external turning tool holders or boring bars?
Browse Compatible S-Series Turning Tool Holders4. Product Application Scenarios
The Korloy SCMT120408-HMP NC3030 insert performs exceptionally across demanding industrial sectors:
- Automotive Powertrain Production: High-speed roughing and semi-finishing of forged steel transmission shafts, gear blanks, and axle components.
- General Mechanical Engineering: External turning and facing of structural alloy steel bars, heavy machine spindles, and industrial rollers.
- Energy & Infrastructure: Machining heavy-duty industrial valves, hydraulic cylinders, and oilfield pipe fittings.
5. Compatibility
Engineered to integrate seamlessly into standard industrial tooling setups:
- Tool Holders: Fully compatible with ISO standard external turning tool holders (e.g., CSKPR, CSBCL, CSSPR series) and internal boring bars featuring 12.7mm square insert pockets.
- Machine Tools: Optimized for CNC lathes, CNC turning centers, and heavy-duty horizontal lathes.
6. Material Comparison & Workpiece Matrix
Understanding grade characteristics ensures maximum metal removal rates and safeguards against premature edge breakdown.
| ISO Material Category | Target Materials | NC3030 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steel, alloy steel, free-machining steel | Excellent (Primary Application - High Wear & Heat Resistance) |
| K (Cast Iron) | Gray cast iron, ductile cast iron (nodular iron) | Very Good (Stable Turning Operations) |
| M (Stainless Steel) | Ferritic and martensitic stainless steel | Good / Secondary Application |
7. Why Choose Us
100% Genuine Guarantee
Sourced directly from authorized manufacturers, guaranteeing verified batch authenticity and consistent industrial tool performance.
Fast Global Logistics
Maintained warehouse inventory and optimized international shipping lines ensure rapid dispatch to eliminate production line bottlenecks.
Technical Expertise
Backed by professional CNC application engineers available to provide customized cutting data recommendations and troubleshooting.
8. Frequently Asked Questions (FAQ)
Q: What are the primary machining benefits of the NC3030 grade for steel turning?
A: The NC3030 grade features a robust CVD multi-layer coating that delivers exceptional flank wear resistance and thermal stability, making it ideal for high-productivity steel roughing and semi-finishing.
Q: How many inserts are included in each factory package?
A: Each standard industrial box contains 10 factory-sealed indexable carbide inserts, individually protected against transit shock and environmental contamination.
Q: Why is the 0.8mm corner radius preferred for general CNC steel turning?
A: The 0.8mm corner radius offers an optimal balance between surface finish quality and mechanical edge strength, allowing for higher feed rates without risking corner chipping.
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.