SUMITOMO WNMG080404N-SU AC830P Carbide Insert WNMG431-SU Steel Turning
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SUMITOMO WNMG080404N-SU AC830P Carbide Turning Insert
ISO: WNMG080404N-SU | ANSI: WNMG431-SU | Grade: AC830P Steel Turning Specialist
1. Product Overview
Which carbide insert is best for heavy interrupted steel turning with aggressive chip control?
The SUMITOMO WNMG080404N-SU AC830P is engineered specifically to tackle high-load roughing to medium steel turning operations under challenging cutting conditions. Utilizing Sumitomo’s advanced AC830P CVD substrate combined with a tough multi-layered $TiCN + Al_2O_3$ coating, this insert provides exceptional thermal barrier protection and notch wear resistance.
The specialized SU Chipbreaker geometry features an optimized 3D rake angle that curtails crater wear, lowers cutting forces, and forces smooth chip curl during continuous and heavily interrupted cuts on alloy steels, carbon steels, and forged components.
2. Key Technical Features
- AC830P Grade Toughness: Specialized CVD coated carbide grade engineered specifically for ISO P30–P40 steel turning applications under interrupted cut conditions.
- SU Chipbreaker Geometry: Designed for medium-to-rough cutting regimes, offering predictable chip breaking across variable depths of cut.
- Double-Sided 80° Trigon Design: Features 6 usable cutting edges per insert, offering maximum cost efficiency over standard CNMG/TNMG geometries.
- Superior Thermal Shock Resistance: Thick $Al_2O_3$ layer prevents micro-cracking during dry turning or high-pressure coolant flushing.
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 (P-Group Steel):
| Parameter | Metric Units | Imperial Units |
|---|---|---|
| Cutting Speed ($Vc$) | 140 - 280 m/min | 460 - 920 SFM |
| Feed Rate ($fn$) | 0.15 - 0.45 mm/rev | 0.006 - 0.018 ipr |
| Depth of Cut ($ap$) | 0.8 - 4.0 mm | 0.031 - 0.157 in |
This insert fits all standard ISO external turning holders: MWLNR/L 2525M08 WWLNR/L 2020K08 DWLNR/L 2525M08
4. Product Application Scenarios
- Heavy Duty Roughing: Forged steel shafts, railway axles, and hot-rolled structural steel tubing.
- Interrupted Cutting: Facing keyways, hex stock, cast steel housings, and welded fabrications.
- General Machinery Steel: Excellent tool life on AISI 1045, 4140, 4340, 8620, and ST52-3 carbon and alloy steels.
5. Compatibility
Works seamlessly with standard ISO clamping systems including Lever Lock (M-Type), Wedge Lock (W-Type), and Top-and-Hole Clamp (D-Type) CNC turning toolholders across standard CNC lathes (Mazak, Haas, Okuma, Doosan, DMG Mori).
6. Sumitomo Grade Comparison
| Grade | ISO Range | Primary Application | Cutting Performance |
|---|---|---|---|
| AC810P | ISO P05 - P20 | High-Speed Continuous Turning | Maximum Wear Resistance |
| AC820P | ISO P10 - P30 | General Steel Turning (First Choice) | Balanced Speed & Toughness |
| AC830P | ISO P20 - P40 | Interrupted Turning & Heavy Duty Roughing | Maximum Fracture Toughness |
7. Why Choose Us & Verified Customer Reviews
100% Genuine Sumitomo Electric Hardmetal products sourced directly via authorized channels. Verified industrial performance backed by global CNC machine shops.
Switched from AC820P to AC830P for interrupted shaft splines. Zero corner chipping over a 500-piece run.
Great chip control even at 0.010 ipr feed on mild steel. No birds-nesting around the chuck.
Very consistent nose radius. Perfect for tight tolerances on our Doosan lathes.
Inserto eccezionale per tagli interrotti su acciaio forgiato. 6 spigoli di taglio perfetti.
6 cutting edges per insert beat standard CNMG performance per dollar every time.
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.