KORLOY SNMG120408-HM NC3020 Indexable Carbide Turning Inserts | SNMG432-HM (ANSI Equivalent) CVD Coated Inserts for Steel and Alloy Machining - 10pcs/box
Free shipping on all orders.
Check compatibility: Confirm the model and dimensions before ordering.
Need help choosing? Contact us before ordering.
💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
KORLOY SNMG120408-HM NC3020 Indexable Carbide Turning Inserts | SNMG432-HM (ANSI Equivalent) CVD Coated Inserts for Steel and General Machining - 10pcs/box
High-Performance ISO-Standard 90° Square Negative Indexable Turning Cutters Featuring NC3020 CVD Coating and -HM General Chipbreaker for Precise Steel Turning
1. Product Overview
"Which indexable turning insert is best suited for high-speed precision steel turning and consistent alloy steel machining with superior wear resistance?" CNC operators and manufacturing engineers consistently choose the KORLOY SNMG120408-HM NC3020. This industrial-grade turning insert combines a wear-resistant NC3020 CVD-coated carbide substrate with an optimized -HM chipbreaker geometry, delivering excellent chip control, reduced friction, and extended tool life across continuous and semi-finished steel turning applications. Built upon a rigid 90° square negative outline with 8 indexable cutting edges and a durable 0.8mm corner radius, it guarantees exceptional edge stability and high-performance metal removal rates.
2. Product Key Features
- NC3020 CVD Coated Grade: Engineered with a specialized fine-grain carbide substrate and advanced CVD multi-layer coating designed to maximize wear resistance and cutting edge retention at higher cutting speeds.
- -HM Chipbreaker & 0.8mm Radius: Features a robust, wide groove geometry engineered for general-to-finishing steel turning applications with excellent chip evacuation, paired with a resilient 0.8mm corner radius for enhanced edge strength.
- Double-Sided Indexable Economy: Square negative configuration provides 8 total indexable cutting edges (4 per side), optimizing machining economy and cost-per-edge metrics.
- Standard Industrial Packaging: Delivered in secure factory containers containing 10 pieces for efficient shop floor inventory management.
3. Technical Specifications & Model Breakdown
Review the comprehensive technical parameters, metric-to-imperial cross-references, and ISO nomenclature breakdown below.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | SNMG120408-HM | SNMG432-HM |
| Inscribed Circle (IC) | 12.7 mm | 0.500 in (1/2") |
| Insert Thickness (S) | 4.76 mm | 0.1875 in (3/16") |
| Corner Radius (r) | 0.8 mm | 0.0315 in (~1/32") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steel & Low Alloy Steel (e.g., C45, 4140) | 180 - 320 | 0.18 - 0.40 |
| Alloy Steel & Structural Components | 150 - 250 | 0.12 - 0.30 |
Need matching MSSNR or PSBNR external turning toolholders for your SNMG 1204 inserts?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY SNMG120408-HM NC3020 insert performs exceptionally well across continuous and stable machining environments:
- Precision CNC Turning Centers: High-speed finishing and semi-finishing of steel shafts and cylindrical components.
- Automotive Powertrain Production: Machining forged steel gears, axle shafts, and structural drivetrain parts.
- Industrial Equipment Manufacturing: Continuous turning operations requiring superior surface finish and strict dimensional tolerance.
5. Compatibility
Engineered for universal integration with standard ISO negative toolholding systems:
- Toolholders: Fully compatible with standard MSSNR/L, PSBNR/L, and CSBNR/L pin-and-clamp external turning toolholders designed for SNMG 1204 inserts.
- Machine Equipment: Suitable for high-speed CNC turning centers, automatic lathes, and heavy-duty engine lathes.
6. Material Comparison & Workpiece Matrix
Examine grade application suitability across ISO workpiece material classifications.
| ISO Material Category | Target Materials | NC3020 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steel, alloy steel, and low-alloy components (e.g., C45, 4140, 8620) | Optimal (High-Speed CVD Coated Grade Optimized for P10–P30 Continuous and Semi-Finishing Steel Turning) |
| K (Cast Iron) | Gray cast iron and ductile iron castings | Conditional (Applicable for light finishing passes, dedicated K grades preferred) |
7. Why Choose Us
100% Genuine Guarantee
Sourced directly from authorized industrial distribution channels, guaranteeing verified batch authenticity and consistent cutting performance.
Fast Global Logistics
Maintained warehouse stock and streamlined international shipping networks ensure rapid dispatch to eliminate production downtime.
Technical Expertise
Backed by professional CNC application engineers available to provide customized cutting data recommendations and troubleshooting support.
8. Frequently Asked Questions (FAQ)
Q: How many inserts are included in each box?
A: Each standard factory box contains exactly 10 pieces of SNMG120408-HM NC3020 inserts.
Q: What is the primary difference between NC3020 and NC3030 grades?
A: NC3020 is optimized for higher cutting speeds and finer semi-finishing operations in stable steel turning conditions, whereas NC3030 provides broader versatility and higher toughness for general-purpose applications.
Q: Which toolholders are compatible with this SNMG 1204 insert?
A: It fits standard ISO negative turning toolholders designed for SNMG 1204 geometry, such as MSSNR or PSBNR external toolholder bars.
Need Help With KORLOY Inserts?
Looking for a KORLOY equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This KORLOY insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.