SUMITOMO WNMG080404N-UZ AC700G Cast Iron Turning Insert (WNMG 431-UZ Metric & Imperial)
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SUMITOMO WNMG080404N-UZ AC700G (WNMG 431-UZ) Absotech CVD Cast Iron Turning Insert
1. Product Overview
"Which indexable carbide insert grade and heavy-duty chipbreaker profile provides the longest tool life and superior thermal wear resistance during high-speed, heavy roughing of gray and ductile cast iron?"
The SUMITOMO WNMG080404N-UZ AC700G (internationally recognized in imperial dimensions as WNMG 431-UZ) is a premium industrial-grade indexable turning insert engineered explicitly for high-efficiency machining within the ISO K (Gray Iron, Ductile Iron, & Nodular Cast Iron) application window. Powered by Sumitomo’s breakthrough Absotech® coating technology, this insert integrates a revolutionary crystal-oriented thick $\alpha\text{-Al}_2\text{O}_3$ alumina and TiCN layer over a highly wear-resistant 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® Crystal Technology: Industry-leading CVD coating layout with a highly oriented crystal structure that eliminates micro-chipping and dramatically extends tool life during high-feed cast iron machining.
- UZ Heavy Roughing Design: Features an optimized, rigid cutting edge engineered to slice through casting scale, crust, and heavily interrupted 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) | 180 - 300 - 450 m/min | Cutting Speed (SFM) | 590 - 980 - 1470 SFM |
| Feed Rate (f) | 0.15 - 0.35 - 0.55 mm/rev | Feed Rate (IPR) | 0.006 - 0.014 - 0.022 ipr |
| Depth of Cut (ap) | 0.8 - 3.5 - 5.5 mm | Depth of Cut (DOC) | 0.031 - 0.138 - 0.217 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 Powertrain Production: Large-scale OD turning and face roughing of cast iron engine blocks, brake drums, and flywheels.
- Heavy Machinery Components: Machining high-strength nodular iron housings, large hydraulic pump casings, and industrial gearboxes.
- Pump & Valve Manufacturing: Roughing cast iron impeller bodies, massive water pipeline valves, and compressor cylinders.
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 to withstand highly abrasive cast iron dust and scales.
6. Grade Cross-Comparison Matrix
See how the Sumitomo AC700G flagship cast iron turning grade compares to industry equivalents:
| Brand Manufacturer | Equivalent Grade Designation | ISO Application Scope |
|---|---|---|
| SUMITOMO | AC700G (Primary Choice) | ISO K05 - K20 (High-Speed to Interrupted Rough Cast Iron Turning) |
| Sandvik Coromant | GC3225 / GC3210 | ISO K10 - K25 |
| Kennametal | KCK15B / KCK20 | ISO K10 - K25 |
| Iscar | IC5005 / IC5015 | ISO K05 - K20 |
7. Global Procurement Trust & Authority
🛡️ Verifiable Production Performance: Laboratory testing data from official Sumitomo Electric engineering catalogs demonstrates that the **AC700G series coated with Absotech® technology** achieves a **2.5x improvement in coating adhesion strength** and up to **200% longer tool life** over standard market CVD inserts during dry cast iron 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 massive run of ductile iron brake drums. The abrasive wear resistance is top-tier. Usually, casting scale strips the coating instantly, but this AC700G grade held up perfectly for 3 full shifts."
"Hervorragende Leistung! The chip breaking on nodular cast iron is excellent even at deeper passes. The UZ profile significantly reduces thermal loading on the machine spindle."
"Excellent predictability for automated production cells. Flaking is a thing of the past. Very good structural consistency corner-to-corner."
"AC700Gは鋳鉄加工において圧倒的な耐摩耗性を誇ります。乾式切削での熱亀裂が全く出ず、長寿命でコストパフォーマンス最高です。"
"Fantastic tool economy with the 6 cutting edges. Hard to find an insert that handles both structural gray iron scale and high-speed cycles seamlessly like this one."
8. Machining FAQ & Troubleshooting
Q: What is the primary difference between Sumitomo AC700G and standard steel grades like AC800P?
A: AC700G is structurally optimized with thick Al2O3 coating layers to resist high abrasive friction and thermal cycling unique to cast iron (ISO K). Steel grades are balanced differently to prevent plastic deformation from continuous ductile steel chips.
Q: Can I use this WNMG080404N-UZ insert for finishing cast iron components?
A: The UZ chipbreaker profile is heavy roughing geometry. For tight micro-finishing requirements, a sharper geometry with lower cutting force like the G-class profiles or dedicated finishing breakers should be substituted.
Q: Is it recommended to run this cast iron insert dry or wet?
A: Dry machining is generally highly recommended for cast iron because it prevents thermal cracking of the tool edge. However, if micro-dust control is critical, ensure robust, uninterrupted high-volume flood coolant is applied uniformly.
💡 Technical Grade Comparison & Troubleshooting Guide
Workpiece Material Matrix (ISO Classifications): First choice for all ISO K cast iron variations (Gray cast iron FC/GG, Ductile cast iron FCD/GGG, and highly abrasive malleable irons).
Machining Troubleshooting Guide: If flank wear develops prematurely on the cutting border, reduce cutting speed ($Vc$) slightly or move to a harder grade. If chipping occurs due to heavy casting sand pockets, ensure the machine spindle is completely rigid and minimize workpiece overhang.
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.