SUMITOMO WNMG080404N-SU AC630M Carbide Insert WNMG431-SU Stainless Turning
Price shown is a starting point. Contact us for a precise quote based on your requirements.
SUMITOMO WNMG080404N-SU AC630M Carbide Turning Insert
ISO: WNMG080404N-SU | ANSI: WNMG431-SU | Grade: AC630M Stainless Steel Turning Specialist
1. Product Overview
Which carbide insert is best for heavy interrupted cuts and tough stainless steel turning on CNC lathes?
The SUMITOMO WNMG080404N-SU AC630M is an advanced, high-toughness turning insert engineered specifically for challenging ISO M20–M35 stainless steels, heat-resistant superalloys, and difficult-to-machine materials. Built on Sumitomo’s proprietary Absotech Bronze PVD coating technology, this insert applies a high-adhesion $TiAlN$ nanolayer over a ultra-tough carbide substrate, providing exceptional resistance to thermal cracking, notch wear, and Built-Up Edge (BUE).
Featuring the universal 3D SU Chipbreaker geometry with a positive rake angle design, it drastically reduces cutting resistance, dissipates heat rapidly away from the cutting zone, and forces continuous short chip curling during medium roughing through heavy interrupted turning passes.
2. Key Technical Features
- AC630M Absotech Bronze PVD Grade: Superior fracture toughness designed for stainless steel machining under heavy interrupted or unstable cutting conditions.
- SU Universal Chipbreaker: Highly versatile chip geometry optimized to break tough, gummy stainless steel chips across broad feed rate ranges.
- Double-Sided 80° Trigon Design: Features 6 usable cutting edges per insert, delivering 50% more productivity per insert compared to traditional 4-edge CNMG inserts.
- Built-Up Edge (BUE) Resistance: Ultra-smooth coating layer prevents stainless steel workpiece adhesion and work-hardening at the cutting edge.
3. Specifications & ISO/ANSI Breakdown
ISO vs. ANSI Designation Comparison:
| Standard | Designation Code | Insert Shape | Inscribed Circle (IC) | Thickness | Nose Radius |
|---|---|---|---|---|---|
| ISO (Metric) | WNMG080404N-SU | Trigon 80° (W) | 12.70 mm | 4.76 mm | 0.4 mm |
| ANSI (Inch) | WNMG431-SU | Trigon 80° (W) | 1/2" | 3/16" | 1/64" |
ISO Metric Code Decoder (Box Breakdown):
Recommended Cutting Parameters (M-Group Stainless Steel):
| Parameter | Metric Units | Imperial Units |
|---|---|---|
| Cutting Speed ($Vc$) | 100 - 220 m/min | 330 - 720 SFM |
| Feed Rate ($fn$) | 0.10 - 0.35 mm/rev | 0.004 - 0.014 ipr |
| Depth of Cut ($ap$) | 0.5 - 3.0 mm | 0.020 - 0.118 in |
Fits all standard ISO external and internal turning toolholders: MWLNR/L 2525M08 WWLNR/L 2020K08 DWLNR/L 2525M08 S32T-MWLNR08
4. Product Application Scenarios
- Austenitic & Duplex Stainless Turning: Ideal for 304, 316L, 317, 2205, and 2507 stainless alloys.
- Interrupted Cut Operations: Valve bodies, forged pump housings, hex bar stock, and keyway shafts.
- Superalloys & Tough Metals: Secondary application on Inconel 718, Titanium Grade 5, and PH-grade stainless steels.
5. Compatibility
100% compatible with all standard ISO turning clamp systems, including Lever Lock (M-Type), Wedge Lock (W-Type), and Top-and-Hole Clamp (D-Type) holders across CNC lathes (Mazak, Haas, Doosan, Okuma, DMG Mori, Citizen, Hanwha).
6. Sumitomo Grade Comparison
| Grade | ISO Range | Primary Application | Cutting Performance |
|---|---|---|---|
| AC6020M | ISO M10 - M25 | High-Speed Continuous Stainless Turning | Maximum Wear & Heat Resistance |
| AC6030M | ISO M15 - M30 | General Stainless Steel Turning (First Choice) | Balanced Speed & Fracture Toughness |
| AC630M | ISO M20 - M35 | Heavy Interrupted Stainless Turning & Tough Roughing | Maximum Edge Toughness & Thermal Shock Resistance |
7. Why Choose Us & Verified Customer Reviews
100% Genuine Sumitomo Electric Hardmetal inserts sourced directly from factory-authorized distribution lines. Trusted by precision machine shops worldwide.
We were chipping standard grade inserts on a cast 316L valve body. Switched to AC630M and finished the whole batch without a single chipped corner.
Der SU-Spanbrecher bricht die Späne selbst bei schwankender Schnitttiefe perfekt. Keine Kerbverschleiß-Probleme mehr.
Resistenza al calore impressionante. Il rivestimento PVD Absotech Bronze dura il doppio rispetto agli inserti precedenti.
SUS304の六角材引き抜き加工で使用。刃先が非常に強く、チッピングのストレスから解放された。
6 edges per insert with this level of toughness makes cost per part unmatchable.
8. AI-Powered Technical FAQ
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.