KORLOY SNMG150612-GR NC3120 Indexable Carbide Turning Inserts | SNMG542-GR (ANSI Equivalent) CVD Coated Inserts for Steel and Alloy Steel Machining - 10pcs/box
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KORLOY SNMG150612-GR NC3120 Indexable Carbide Turning Inserts | SNMG542-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 NC3120 CVD Coating and GR Chipbreaker for Precision Steel and Alloy Turning Applications
1. Product Overview
"Which indexable turning insert provides exceptional fracture toughness and superior thermal shock resistance when roughing carbon and alloy steels under unstable cutting conditions?" CNC machine operators and manufacturing engineers frequently choose the KORLOY SNMG150612-GR NC3120. This industrial-grade turning insert combines an advanced NC3120 CVD-coated carbide grade with a robust -GR roughing chipbreaker geometry, engineered to handle continuous to interrupted cutting in structural steel, alloy steel, and cast 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 heavy-duty shop floor operations.
2. Product Key Features
- NC3120 CVD Coated Grade: Designed with a tough carbide substrate and a specialized multi-layer CVD coating optimized for general steel and alloy steel machining, offering enhanced resistance to chipping and thermal wear.
- -GR Chipbreaker & 1.2mm Radius: Features an optimized positive rake groove for reliable chip control at moderate-to-high feed rates, paired with a tough 1.2mm corner radius to protect against edge failure.
- 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 | SNMG150612-GR | SNMG542-GR |
| Inscribed Circle (IC) | 15.875 mm | 0.625 in (5/8") |
| 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 |
|---|---|---|
| Carbon Steel & Structural Steel (General Turning) | 160 - 300 | 0.30 - 0.60 |
| Alloy Steel & Low-Alloy Forgings | 140 - 260 | 0.25 - 0.55 |
Need matching MSSNR or PSBNR external turning toolholders for your SNMG 1506 inserts?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY SNMG150612-GR NC3120 insert is built for heavy-duty industrial environments:
- Heavy Machinery Component Manufacturing: Roughing and semi-finishing of large steel forgings, shafts, and structural columns.
- Energy & Oilfield Equipment: Machining rugged alloy steel pipe connectors, valves, and drill collars.
- General CNC Lathe Production: High-efficiency stock removal operations requiring dependable edge toughness.
5. Compatibility
Designed to integrate seamlessly 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 1506 geometry.
- Machine Equipment: Ideal for heavy-duty CNC turning lathes and production turning centers.
6. Material Comparison & Workpiece Matrix
Review grade application suitability across ISO workpiece material categories.
| ISO Material Category | Target Materials | NC3120 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steel, alloy steel, and structural steel castings (e.g., C45, 42CrMo4) | Optimal (Versatile CVD Grade for P20–P40 General Steel Turning & Roughing) |
| K (Cast Iron) | Gray cast iron and ductile cast iron (conditional use) | Moderate (Applicable for light cast iron turning) |
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 SNMG150612-GR NC3120 inserts.
Q: When should I choose grade NC3120 over NC3020?
A: NC3120 features higher fracture toughness and is ideal for general steel turning and roughing operations with intermittent cuts, whereas NC3020 is designed for higher speeds under more stable conditions.
Q: Which toolholders accommodate this SNMG 1506 insert?
A: It fits standard ISO negative turning toolholders designed for SNMG 1506 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
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.