SUMITOMO WNMG080404N-UZ AC820P Steel Turning Insert (WNMG 431-UZ Metric & Imperial)
Free shipping on all orders.
Check compatibility: Confirm the model and dimensions before ordering.
Need help choosing? Contact us before ordering.
💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
SUMITOMO WNMG080404N-UZ AC820P (WNMG 431-UZ) Absotech Platinum CVD Steel Turning Insert
1. Product Overview
"Which indexable carbide insert grade and heavy-duty chipbreaker profile provides the best tool life and thermal shock resistance during high-speed interrupted roughing of alloy steels?"
The SUMITOMO WNMG080404N-UZ AC820P (internationally recognized in imperial dimensions as WNMG 431-UZ) is a premier industrial-grade indexable turning insert engineered explicitly for high-efficiency machining within the ISO P (Carbon Steel, Alloy Steel, & Structural Steel) application window. Powered by Sumitomo’s breakthrough Absotech® Platinum CVD coating technology, this insert integrates a revolutionary ultra-smooth $\alpha\text{-Al}_2\text{O}_3$ alumina and thick TiCN layer over a highly fracture-resistant gradient carbide substrate. This advanced surface architecture dramatically reduces coating flaking, adhesive wear, and crater wear under severe mechanical stress. Designed with the robust UZ chipbreaker geometry, it features an aggressive variable rake angle and a wide, deep pocket configuration that lowers cutting forces, resists plastic deformation, and ensures excellent chip evacuation during heavy roughing to medium-interrupted turning operations.
2. Product Key Features
- Absotech® Platinum Technology: Industry-leading CVD coating layout with a smooth crystal orientation that eliminates micro-chipping and dramatically extends tool life during high-feed steel milling and turning.
- UZ Heavy Roughing Design: Features an optimized, rigid cutting edge engineered to slice through scale, crust, and heavily interrupted steel surfaces without catastrophic edge fracture.
- Exceptional Thermal Shock Resistance: The specialized multi-layer structural chemistry protects the internal carbide core from rapid cyclical temperature spikes during wet or dry machining.
- Negative Trigon Economy: Double-sided layout provides 6 robust, high-strength cutting edges per insert, reducing tool costs per component in massive production runs.
3. Technical Specifications & Dimension Matrix
| Standard Typology | Model/Grade Designation | Measurement Basis |
|---|---|---|
| ISO Designation | WNMG080404N-UZ | Metric Standard (mm) |
| ANSI Designation | WNMG 431-UZ | Imperial Standard (Inch) |
🔍 ISO Standard Code Breakdown: WNMG080404N-UZ
Trigon Shape (80°)
0° Relief Angle
M-Class Tolerance
With Hole & Slots
Edge Length (8.7mm)
Thickness (4.76mm)
Nose Radius (0.4mm)
Heavy Roughing Breaker
📊 Recommended Cutting Parameters (Metric vs Imperial Comparison)
| Parameter Metric | Metric Recommended Values | Parameter Imperial | Imperial Recommended Values |
|---|---|---|---|
| Cutting Speed (Vc) | 150 - 280 - 350 m/min | Cutting Speed (SFM) | 490 - 920 - 1150 SFM |
| Feed Rate (f) | 0.15 - 0.35 - 0.50 mm/rev | Feed Rate (IPR) | 0.006 - 0.014 - 0.020 ipr |
| Depth of Cut (ap) | 0.8 - 3.0 - 5.0 mm | Depth of Cut (DOC) | 0.031 - 0.118 - 0.197 inch |
This negative WNMG configuration requires rigid clamping toolholders to handle heavy roughing cutting forces. View compatible shanks below:
View Compatible DWLNR / MWLNR Lathe Toolholders →4. Product Application Scenarios
Engineered for high-volume material removal across intense global manufacturing applications:
- Automotive Component Production: Large-scale OD turning of forged steel axles, transmission shafts, and drive gears.
- Heavy Machinery Construction: Machining high-tensile structural bars, large flange plates, and forged linking components.
- Oil & Gas Hardware: Roughing carbon steel pipe connections, premium couplers, and valve bodies.
5. Compatibility & Rigidity Standards
Perfectly optimized for standard multi-axis CNC turning centers, heavy-duty industrial lathes, and high-production automated systems. Out-of-the-box compatibility with tooling blocks from major equipment manufacturers including Mazak, Okuma, Haas, Doosan, and DMG Mori. Due to the aggressive chip evacuation and heavy forces of the UZ breaker layout, rigid tool clamping assemblies and strong workholding setups are strictly required.
6. Grade Cross-Comparison Matrix
See how the Sumitomo AC820P flagship steel turning grade compares to industry equivalents:
| Brand Manufacturer | Equivalent Grade Designation | ISO Application Scope |
|---|---|---|
| SUMITOMO | AC820P (Primary Choice) | ISO P15 - P30 (General to Interrupted High-Efficiency Steel Turning) |
| Sandvik Coromant | GC4425 / GC4325 | ISO P15 - P35 |
| Kennametal | KCP25B / KCP30 | ISO P20 - P35 |
| Iscar | IC8250 / IC830 | ISO P20 - P35 |
7. Global Procurement Trust & Authority
🛡️ Verifiable Production Performance: Laboratory testing data from official Sumitomo Electric engineering catalogs demonstrates that the **AC820P series coated with Absotech® Platinum technology** achieves a **2x improvement in coating adhesion strength** and up to **180% longer tool life** over standard market CVD inserts during interrupted steel machining. We guarantee 100% factory original, authentic sealed packages sourced straight via secure B2B supply lines.
💬 Real Global Machinist Reviews
"We put these WNMG 431-UZ inserts on a roughing job turning 4140 pre-hardened steel bars with heavy interruptions. The coating adhesion is unbelievable—zero flaking or chipping on the corners even after hours of high-impact cuts."
"Hervorragende Spanbrechung! The UZ geometry performs exactly as promised. It maintains excellent chip control even when we push the depth of cut over 4.0mm on carbon steel forgings."
"Very reliable grade for automated lines. The tool wear pattern is incredibly predictable, preventing any sudden structural breakdowns during unmanned shifts."
"AC820P材種は鋼の断続加工で圧倒的な寿命を示します。UZブレーカのおかげで切削抵抗が低く抑えられ、ビビリも発生しにくいです。"
"Getting 6 solid cutting corners out of a single insert makes a massive difference for our bottom line. Perfect balance of price and durability for heavy industrial machining."
8. Machining FAQ & Troubleshooting
Q: What is the primary difference between Sumitomo AC820P and other grades like AC830P?
A: AC820P serves as the ultimate balance grade for medium-to-roughing operations under diverse cutting conditions, while AC830P is a tougher, slower grade optimized exclusively for extreme, heavy-interrupted impact turning.
Q: Can I use this WNMG080404N-UZ insert for finishing operations?
A: The UZ chipbreaker profile is custom-engineered for heavy material removal and medium roughing. For high-accuracy finishing applications, a tighter geometry like the NE or FB style is recommended.
Q: Is it better to run this steel turning insert wet or dry?
A: Thanks to the high thermal protection of the Absotech Platinum layer, it runs exceptionally well dry at high speeds. However, during heavily interrupted cuts, continuous flood coolant helps maintain part size consistency and flushes out chips.
💡 Technical Grade Comparison & Troubleshooting Guide
Workpiece Material Matrix (ISO Classifications): Premium choice for all ISO P steel variations (carbon steel, structural steel, alloy steels like 4140/4340, and tool steels). Highly adaptable for light interrupted machining of ductile cast iron (ISO K).
Machining Troubleshooting Guide: If crater wear develops prematurely on the top rake surface, increase cutting speed ($Vc$) slightly or switch to a harder grade. If micro-chipping occurs during severe interruptions, ensure that your setup rigidity is fully optimized or slightly reduce feed rates.
Need Help With Sumitomo Inserts?
Looking for a Sumitomo 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 Sumitomo insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.