KORLOY SNMG120404-GS PC9030 Indexable Carbide Turning Inserts | SNMG431-GS (ANSI Equivalent) PVD Coated Inserts for Precision Steel and Stainless Steel Finishing - 10pcs/box
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KORLOY SNMG120404-GS PC9030 Indexable Carbide Turning Inserts | SNMG431-GS (ANSI Equivalent) PVD Coated Inserts for Precision Steel and Stainless Steel Finishing - 10pcs/box
High-Performance ISO-Standard 90° Square Negative Indexable Turning Cutters Featuring PC9030 PVD Coating and -GS Low-Cutting-Force Chipbreaker for Precision Fine Finishing
1. Product Overview
"Which indexable turning insert is best suited for high-precision fine finishing and tight-tolerance machining on steel and stainless steel components with minimal cutting forces?" CNC machinists and manufacturing engineers consistently select the KORLOY SNMG120404-GS PC9030. This industrial-grade turning insert pairs a wear-resistant PC9030 PVD-coated carbide substrate with an advanced -GS chipbreaker geometry, ensuring smooth chip flow, minimized burr formation, and extended tool life across carbon steels, alloy steels, and austenitic stainless steels. Built on a sturdy 90° square negative outline with 8 indexable cutting edges and a precise 0.4mm corner radius, it delivers exceptional surface finish quality and dimensional stability.
2. Product Key Features
- PC9030 PVD Coated Grade: Engineered with a specialized sub-micron carbide substrate and multi-layer PVD coating designed for superior flank wear resistance and thermal stability during fine finishing.
- -GS Chipbreaker & 0.4mm Radius: Features a positive rake geometry designed to lower cutting resistance and control chips effectively at low depths of cut, paired with a tight 0.4mm corner radius for superior surface roughness control.
- Double-Sided Indexable Economy: Square negative configuration offers 8 total indexable cutting edges (4 per side), maximizing per-edge cost efficiency.
- Standard Industrial Packaging: Supplied in protective factory containers containing 10 pieces for efficient toolcrib inventory management.
3. Technical Specifications & Model Breakdown
Review the comprehensive technical specifications, 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 | SNMG120404-GS | SNMG431-GS (Modified Radius) |
| 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) | 0.4 mm | 0.0156 in (~1/64") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steel & Alloy Steel (Fine Finishing) | 200 - 350 | 0.08 - 0.22 |
| Austenitic Stainless Steel (Fine Finishing) | 160 - 280 | 0.08 - 0.20 |
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 SNMG120404-GS PC9030 insert performs exceptionally across diverse precision turning environments:
- Precision Shaft Machining: Ultra-fine external finishing of high-precision shafts, spindles, and rotating components.
- Stainless Steel Components: Fine diameter finishing of medical device parts, food machinery shafts, and corrosion-resistant fittings.
- CNC Production Lathes: High-speed finish passes where mirror-like surface roughness criteria and strict dimensional tolerances are required.
5. Compatibility
Engineered to integrate seamlessly 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: Optimized for high-precision CNC lathes, Swiss-type setups, and multi-axis turning centers.
6. Material Comparison & Workpiece Matrix
Examine grade application suitability across ISO workpiece material classifications.
| ISO Material Category | Target Materials | PC9030 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steel and alloy steel components (e.g., C45, 40Cr) | Optimal (PVD Coated Substrate Engineered for P01–P15 Fine Steel Finishing) |
| M (Stainless Steel) | Austenitic stainless steels (e.g., 304, 316) | Optimal (Superior anti-notch wear for M05–M20 Stainless Steel Fine Finishing) |
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 box?
A: Each standard factory box contains exactly 10 pieces of SNMG120404-GS PC9030 inserts.
Q: What makes the 0.4mm corner radius and -GS breaker ideal for fine finishing?
A: The smaller 0.4mm nose radius combined with the sharp positive -GS geometry enables exceptionally low cutting forces and superior surface finish quality during light finishing passes.
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
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.