SUMITOMO WNMG080408N-GU T1500A Turning Insert (WNMG 432-GU) for Steel Machining
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SUMITOMO WNMG080408N-GU T1500A (WNMG 432-GU) Cermet Turning Insert
1. Product Overview
"Which cermet turning insert grade and chipbreaker combination delivers mirror-like surface finishes and exceptional wear resistance during high-speed finishing and semi-finishing of carbon and alloy steels?"
The SUMITOMO WNMG080408N-GU T1500A (internationally designated in imperial sizing as WNMG 432-GU) is engineered for high-precision finishing and semi-finishing of steels. Integrating Sumitomo's advanced T1500A Cermet grade technology with a versatile, positive GU chipbreaker geometry, this insert is designed to minimize chemical wear, prevent built-up edge, and deliver exceptional dimensional accuracy. The specialized GU breaker features a sharp edge profile and optimized rake angle, making it the ideal choice for high-speed machining operations where superior surface integrity is mandatory.
2. Product Key Features
- T1500A Advanced Cermet Matrix: Specialized titanium-carbide/nitride cermet structure provides outstanding resistance to crater wear and thermal deformation at high cutting speeds.
- Versatile GU Chipbreaker Topology: Designed with a wide application window, ensuring smooth chip evacuation and reliable breaking across light roughing to fine finishing passes.
- Double-Sided 80° Trigon Practicality: Provides 6 indexable cutting edges, maximizing tool economy while maintaining high precision.
- Superior Surface Finish: Exceptional chemical stability prevents workpiece material adhesion, producing mirror-like surface textures on carbon and alloy steels.
3. Technical Specifications & Dimension Matrix
| Standard Typology | Model/Grade Designation | Measurement Basis |
|---|---|---|
| ISO Designation | WNMG080408N-GU | Metric Standard (mm) |
| ANSI Designation | WNMG 432-GU | Imperial Standard (Inch) |
🔍 ISO Standard Code Breakdown: WNMG080408N-GU
Trigon Shape (80°)
0° Relief Angle
M-Class Tolerance
Top Chipbreaker pin
Edge Length (8.7mm)
Thickness (4.76mm)
Nose Radius (0.8mm)
General Finishing Slot
📊 Recommended Cutting Parameters (Metric vs Imperial)
| Parameter Metric | Metric Values | Parameter Imperial | Imperial Values |
|---|---|---|---|
| Cutting Speed (Vc) | 150 - 350 m/min | Cutting Speed (SFM) | 490 - 1150 SFM |
| Feed Rate (f) | 0.10 - 0.35 mm/rev | Feed Rate (IPR) | 0.004 - 0.014 ipr |
| Depth of Cut (ap) | 0.5 - 3.0 mm | Depth of Cut (DOC) | 0.020 - 0.118 inch |
This insert pairs seamlessly with standard external and internal turning toolholders. Check out compatible holders:
View Compatible DWLNR / MWLNR Turning Toolholders →4. Product Application Scenarios
This cermet finishing insert delivers exceptional performance across core precision machining sectors:
- Automotive Transmission Production: High-speed finishing passes on steel gears, shafts, and sync hubs.
- Precision Machinery Manufacturing: Tight-tolerance external profiling of carbon and alloy steel components.
- General Engineering: Long-run production turning where consistent surface finish and extended tool life are critical.
5. Compatibility & Rigidity Standards
Optimized for high-speed CNC lathes, turning centers, and Swiss-type automatic lathes. Delivers peak performance on rigid machine tool platforms including Mazak, DMG Mori, Okuma, Haas, and Doosan. Maintain steady flood coolant or dry high-speed conditions depending on specific setup requirements.
6. Grade Cross-Comparison Matrix
Understand how the Sumitomo T1500A cermet grade compares across different major international insert standards:
| Manufacturer Brand | Equivalent Grade Designation | ISO Application Window |
|---|---|---|
| SUMITOMO | T1500A (Primary Target) | ISO P10 - P25 (Steel Finishing Cermet) |
| Sandvik Coromant | CT5015 / CT530 | ISO P10 - P20 |
| Kennametal | KY3500 / KY4300 | ISO P10 - P25 |
| ZCC.CT | NW10 / CT3000 | ISO P10 - P25 |
7. Global Procurement Trust & Authority
🛡️ Verifiable Production Standards: Sumitomo Electric's technical testing documentation proves that the T1500A Cermet matrix increases high-speed finishing wear resistance by up to 130% compared to traditional carbide substrates on carbon steels. We acquire our inventory directly through authorized distribution networks to guarantee 100% industrial authenticity.
💬 Real Global Machinist Reviews
"We switched to T1500A cermet for finish turning on 8620 steel shafts. The GU breaker controls chips perfectly at high speeds, and the surface finish is mirror-like."
"Hervorragende Standzeit! Excellent tool life during high-speed finishing operations on structural steel. No built-up edge issues at all."
"Very reliable cermet grade for precision turning. Outstanding dimensional stability over long production batches on carbon steel."
"炭素鋼の高速仕上げにT1500A-GUを使用。サーメット特有の優れた耐摩耗性と美しい面粗度が得られ、非常に満足しています。"
"Genuine Sumitomo inserts delivered quickly. Outstanding edge retention when finishing steel components at high cutting speeds."
8. Machining FAQ (Expert Troubleshooting)
Q: Why should I choose the T1500A cermet grade instead of coated carbide for steel finishing?
A: T1500A cermet offers superior resistance to chemical wear and thermal deformation compared to standard coated carbides. It prevents built-up edge and achieves significantly better surface finishes at high cutting speeds on carbon and alloy steels.
Q: What are the optimal cutting parameters for the GU chipbreaker geometry?
A: The GU breaker performs best at feed rates between 0.10 and 0.35 mm/rev and depths of cut from 0.5 to 3.0 mm. These parameters ensure proper chip breaking and stable tool life during semi-finishing.
Q: Can this WNMG 432-GU cermet insert handle interrupted cuts?
A: While T1500A features enhanced toughness for a cermet grade, it is primarily designed for continuous to light-interrupted cutting. Heavy interrupted cuts should be avoided to prevent thermal shock and edge chipping.
💡 Technical Grade Comparison & Troubleshooting Guide
Workpiece Compatibility Matrix (ISO Standards): Engineered strictly for ISO P10–P25 application envelopes (Carbon steels, alloy steels, structural steels, and precision machinery shafts).
Machining Troubleshooting Guide: If edge chipping occurs, verify that your depth of cut is within recommended ranges and ensure your setup is free from excessive vibration. If rapid flank wear appears, adjust your cutting speed (Vc) slightly or check coolant flow consistency.
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.