KORLOY SNMG190612-GR NC3020 Indexable Carbide Turning Inserts | SNMG642-GR (ANSI Equivalent) CVD Coated Inserts for Steel and Alloy Steel Machining - 10pcs/box
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KORLOY SNMG190612-GR NC3020 Indexable Carbide Turning Inserts | SNMG642-GR (ANSI Equivalent) CVD Coated Inserts for Steel and Alloy Steel Machining - 10pcs/box
High-Performance ISO-Standard 90° Square Negative Indexable Turning Cutters Featuring NC3020 CVD Coating and GR Chipbreaker for Precision Steel and Alloy Turning Applications
1. Product Overview
"Which indexable turning insert delivers superior wear resistance and predictable tool life when machining alloy steels at higher cutting speeds?" CNC operators and manufacturing engineers frequently choose the KORLOY SNMG190612-GR NC3020. This industrial-grade turning insert combines an advanced NC3020 CVD-coated carbide grade with a robust -GR roughing chipbreaker geometry, engineered to handle continuous to slightly interrupted cutting conditions in carbon steel, alloy steel, and pre-hardened components. Built on an 8-edge 90° square negative outline with a durable 1.2mm corner radius, it ensures maximum stability and high metal removal rates under rigorous shop floor operations.
2. Product Key Features
- NC3020 CVD Coated Grade: Designed with a wear-resistant carbide substrate and specialized multi-layer CVD coating tailored for high-speed steel and alloy steel turning, minimizing crater wear.
- -GR Chipbreaker & 1.2mm Radius: Features an optimized positive rake groove for smooth chip control at moderate-to-high feed rates, paired with a tough 1.2mm corner radius to protect against chipping.
- Double-Sided Indexable Economy: Square negative design provides 8 functional indexable cutting edges (4 per side), lowering tool cost per edge.
- Industrial Box Packaging: Delivered in secure factory boxes containing 10 individual inserts for systematic inventory tracking.
3. Technical Specifications & Model Breakdown
Examine 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 | SNMG190612-GR | SNMG642-GR |
| Inscribed Circle (IC) | 19.05 mm | 0.750 in (3/4") |
| Insert Thickness (S) | 6.35 mm | 0.250 in (1/4") |
| Corner Radius (r) | 1.2 mm | 0.047 in (~3/64") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Alloy Steel & High-Strength Steel (Continuous Machining) | 180 - 320 | 0.30 - 0.65 |
| Carbon Steel & Structural Components | 200 - 350 | 0.35 - 0.70 |
Need matching MSSNR or PSBNR external turning toolholders for your SNMG 1906 inserts?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY SNMG190612-GR NC3020 insert is tailored for demanding production environments:
- Automotive Powertrain Manufacturing: High-speed finishing and semi-finishing of forged steel shafts, drive components, and transmission parts.
- Aerospace & Heavy Machinery: Machining high-strength alloy steel structural components requiring stable surface integrity.
- CNC Production Turning: Automated lathe applications prioritizing fast cycle times and consistent wear behavior.
5. Compatibility
Designed to integrate perfectly with standard ISO negative toolholder systems:
- Toolholders: Fully compatible with standard MSSNR/L, PSBNR/L, and CSBNR/L pin-and-clamp external toolholders built for SNMG 1906 geometry.
- Machine Equipment: Ideal for high-rigidity CNC turning centers and automated production lathes.
6. Material Comparison & Workpiece Matrix
Review grade application suitability across ISO workpiece material categories.
| ISO Material Category | Target Materials | NC3020 Performance Suitability |
|---|---|---|
| P (Steel) | Alloy steel, carbon steel, and low-alloy forged components (e.g., 42CrMo4, 34CrNiMo6) | Optimal (High-Speed CVD Grade for P10–P30 Alloy Steel Turning) |
| M (Stainless Steel) | Austenitic and martensitic stainless steel (conditional use) | Moderate (Applicable under stable conditions) |
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 delays.
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 packaging box?
A: Each standard factory box contains exactly 10 pieces of SNMG190612-GR NC3020 inserts.
Q: What is the main difference between NC3020 and NC3030 grades?
A: NC3020 is optimized for higher cutting speeds and wear resistance in alloy steels under stable conditions, whereas NC3030 provides extra toughness for general steel roughing.
Q: Which toolholders accommodate this SNMG 1906 insert?
A: It fits standard ISO negative turning toolholders designed for SNMG 1906 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.