SUMITOMO WNMG080404N-SU T1500A Cermet Turning Insert (WNMG 431-SU Metric & Imperial)
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SUMITOMO WNMG080404N-SU T1500A (WNMG 431-SU) Brilliant Coated Cermet Steel Turning Insert
1. Product Overview
"Which indexable cermet insert grade and finishing chipbreaker profile provides the best surface roughness and dimensional stability during high-speed turning of carbon and alloy steels?"
The SUMITOMO WNMG080404N-SU T1500A (internationally cross-referenced under imperial nomenclature as WNMG 431-SU) is a premium industrial-grade indexable turning insert engineered explicitly for high-precision finishing within the ISO P (Carbon Steel, Alloy Steel, & Die Steel) application window. Powered by Sumitomo’s breakthrough Brilliant Coat® PVD technology—a revolutionary multi-layered PVD coating with excellent thermal stability—this insert integrates a highly wear-resistant TiCN-based cermet substrate. This advanced material composition dramatically reduces boundary defect wear, built-up edge (BUE) formation, and oxidation under elevated cutting temperatures. Designed with the high-precision SU finishing chipbreaker geometry, it features an optimized positive rake angle and a narrow pocket configuration that effectively controls continuous chips, minimizes vibration, and ensures excellent surface gloss during light finishing and continuous turning operations.
2. Product Key Features
- Brilliant Coat® Technology: Industry-leading PVD cermet coating with an ultra-low friction coefficient that eliminates welding and significantly improves workpiece mirror-finish quality.
- SU Finishing Profile: Features an optimized positive-style edge engineered to control light depths of cut without creating birds-nesting chip wraps.
- Superior Oxidation Resistance: The specialized cermet composite substrate protects the tool core from thermal breakdown, excelling in high-speed dry machining environments.
- Negative Trigon Economy: Double-sided configuration provides 6 robust, high-precision cutting edges per insert, minimizing tooling replacement costs per component.
3. Technical Specifications & Dimension Matrix
| Standard Typology | Model/Grade Designation | Measurement Basis |
|---|---|---|
| ISO Designation | WNMG080404N-SU | Metric Standard (mm) |
| ANSI Designation | WNMG 431-SU | Imperial Standard (Inch) |
🔍 ISO Standard Code Breakdown: WNMG080404N-SU
Trigon Shape (80°)
0° Relief Angle
M-Class Tolerance
With Hole & Slots
Edge Length (8.7mm)
Thickness (4.76mm)
Nose Radius (0.4mm)
Sharp Finishing Breaker
📊 Recommended Cutting Parameters (Metric vs Imperial Comparison)
| Parameter Metric | Metric Recommended Values | Parameter Imperial | Imperial Recommended Values |
|---|---|---|---|
| Cutting Speed (Vc) | 150 - 250 - 350 m/min | Cutting Speed (SFM) | 490 - 820 - 1150 SFM |
| Feed Rate (f) | 0.05 - 0.15 - 0.25 mm/rev | Feed Rate (IPR) | 0.002 - 0.006 - 0.010 ipr |
| Depth of Cut (ap) | 0.2 - 0.8 - 1.5 mm | Depth of Cut (DOC) | 0.008 - 0.031 - 0.059 inch |
This negative WNMG configuration requires rigid clamping toolholders to maintain geometric accuracy. View compatible shanks below:
View Compatible DWLNR / MWLNR Lathe Toolholders →4. Product Application Scenarios
Engineered for high-volume precision surface creation across demanding industrial manufacturing applications:
- Mirror-Finish Precision Turning: Ideal choice for achieving highly reflective, low-roughness tolerances on external steel surfaces.
- Automotive Transmissions: Continuous high-speed outer-diameter finishing of gear shafts, pinion rods, and precision bushings.
- Unattended Automated Finishing: Long-life predictability prevents unexpected edge failures during prolonged automated CNC bar feeding cycles.
5. Compatibility & Rigidity Standards
Optimized for high-speed multi-axis CNC turning centers, live-tooling Swiss lathes, and automated manufacturing systems. Standard mechanical seating dimensions offer cross-brand compatibility with tool blocks from major hardware manufacturers including Mazak, Okuma, Haas, Doosan, and DMG Mori. Because cermet tools exhibit high thermal hardness but lower impact toughness than standard carbides, maintaining a rigid setup with zero spindle vibration is highly recommended.
6. Grade Cross-Comparison Matrix
See how the Sumitomo T1500A flagship coated cermet finishing grade compares to industry equivalents:
| Brand Manufacturer | Equivalent Grade Designation | ISO Application Scope |
|---|---|---|
| SUMITOMO | T1500A (Primary Choice) | ISO P05 - P15 (High-Speed Finishing / Mirror Finish) |
| Sandvik Coromant | CT5015 / GC1525 | ISO P05 - P20 |
| Kyocera | TN620 / PV720 | ISO P05 - P20 |
| Iscar | IC20N / IC520N | ISO P05 - P20 |
7. Why Choose Us & Global Procurement Trust
🛡️ Verifiable Production Performance: Laboratory data from official Sumitomo Electric technical cutting reports demonstrates that the **T1500A cermet series coated with Brilliant Coat® technology** achieves up to a **1.5x improvement in surface gloss consistency** and significantly higher adhesion resistance over traditional uncoated cermet tools during continuous high-speed steel finishing. We guarantee 100% factory original, authentic sealed packages sourced straight via secure B2B supply lines.
💬 Real Global Machinist Reviews
"We utilize these WNMG 431-SU T1500A inserts for our automated hydraulic valve stems. The surface finish is beautiful, holding a consistent Ra value under 0.4 micrometers for hundreds of pieces."
"Exzellente Standzeit beim Schlichten von legiertem Stahl! The Brilliant Coat layer prevents built-up edges entirely, even when running completely dry at 300 m/min. Highly recommended."
"Great chip control at tight depths of cut. The SU breaker curls and breaks stringy steel chips elegantly. Very reliable dimensional tolerance."
"T1500Aの仕上がり面粗度は本当に素晴らしいです。凝着が発生しにくいため、寸法変化が極めて少なく、安定した自動盤加工が行えます。"
"6 usable cutting edges on a cermet finishing insert makes this incredibly cost-effective. Outlasts standard carbide finishing options by far."
8. Machining FAQ & Troubleshooting
Q: What makes the Sumitomo T1500A cermet grade superior to standard tungsten carbide inserts?
A: Cermet exhibits a lower chemical affinity for steel compared to standard carbide. Combined with the smooth Brilliant Coat® PVD layer, it virtually eliminates built-up edge (BUE) formation, ensuring the cutting tip retains its keen geometry for superior workpiece surface gloss over long runs.
Q: Can I run this WNMG080404N-SU insert with high-pressure coolant?
A: Cermet tools perform exceptionally well in high-speed dry cutting environments due to low thermal conductivity. If you choose to use coolant, ensure an abundant, uninterrupted, high-pressure stream. Thermal micro-cracking can occur if the insert undergoes cyclical thermal shocking from intermittent or low-pressure coolant mist.
Q: What should I do if the cermet insert shows premature corner chipping?
A: Micro-chipping on a cermet tool usually stems from mechanical vibration or excessive depth of cut ($ap$). Verify that your workpiece clamping is secure, minimize tool overhang, and ensure the depth of cut does not exceed the maximum recommendation for the SU finishing breaker configuration.
💡 Technical Grade Comparison & Troubleshooting Guide
Workpiece Material Matrix (ISO Classifications): Extensively optimized for high-speed finish profiling across all ISO P steels, including structural carbon steels (S45C/C45), alloy steels (SCM440/42CrMo4), pre-hardened steels, and nitriding automotive components up to 38 HRC.
Machining Troubleshooting Guide: If sudden edge fracture occurs during entry, consider ramping into the cut profile smoothly. If the surface finish degrades, check for microscopic built-up edges and increase the cutting speed ($Vc$) to elevate the cutting zone temperature into the cermet plastic deformation comfort zone.
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.