SUMITOMO WNMG080404N-EX AC5015S (WNMG 431-EX) Exotic HRSA Carbide Turning Insert
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SUMITOMO WNMG080404N-EX AC5015S (WNMG 431-EX) Absotech PVD Carbide Exotic HRSA Heavy Interrupted Turning Insert
1. Product Overview
"Which indexable carbide insert grade and roughing chipbreaker geometry provide the absolute highest structural edge stability and boundary notch wear control during heavy, interrupted turning of nickel-based superalloys like Inconel 718 and René?"
The SUMITOMO WNMG080404N-EX AC5015S (internationally designated in imperial benchmarks as WNMG 431-EX) is an industrial-grade, double-sided negative 80° trigon indexable turning insert engineered explicitly for heavy roughing, fluctuating cut depths, and high-impact interrupted machining of Heat-Resistant Superalloys (HRSA) and exotic cobalt/nickel-based matrices (ISO S10 - S20 classification). Utilizing Sumitomo's pioneering Absotech PVD coating technology, the AC5015S grade features an ultra-dense TiAlN-based composite structure with superior high-temperature hardness and adhesion strength. This drastically minimizes localized depth-of-cut notch wear and plastic deformation under severe thermal loads. Paired with the highly stable, heavy-feed EX Type Chipbreaker geometry, this insert shears cleanly through work-hardening surface layers, breaks continuous stringy chips, and yields predictable tool life across heavy-duty defense, aerospace, and oil field turning operations.
2. Product Key Features
- Absotech PVD Ultra-Dense Technology: Implements a highly engineered, stress-controlled thin-film PVD architecture. It forms a supreme thermal shield that resists thermal shock fatigue caused by cyclic coolant exposure during high-speed interrupted passes.
- Heavy-Duty EX-Type Rake Geometry: Features a wide, reinforced cutting edge land and an open chip deflector basin. The EX profile optimizes shearing efficiency to suppress cutting zone heat while maintaining maximum mechanical edge strength.
- High-Rigidity, Deformation-Resistant Core: Built on a specialized fine-grained tungsten carbide-cobalt substrate tailored for exceptional high-temperature yield strength. It guarantees pocket seat reliability and structural preservation under heavy tool pressure.
- 6 Cost-Efficient Indexable Edges: The negative 80-degree structural trigon layout yields 6 distinct cutting corners per insert, delivering elite processing economy and maximizing shop floor cost savings.
3. Technical Specifications & Dimension Matrix
🔍 ISO / ANSI Nomenclature Decoding Matrix
Trigon Shape (80°)
0° Relief Angle
M-Class Tolerance
With Hole & Slots
Edge Length (9.525mm)
Thickness (4.76mm)
Nose Radius (0.4mm)
Heavy Roughing
| Dimension Parameter | Metric Specification (ISO) | Imperial Specification (ANSI) |
|---|---|---|
| Inscribed Circle (IC) | 9.525 mm | 0.375 in (3/8") |
| Thickness (S) | 4.76 mm | 0.187 in (3/16") |
| Corner Nose Radius (re) | 0.4 mm | 0.0156 in (1/64") |
| Fixing Hole Diameter (d1) | 3.81 mm | 0.150 in |
📊 Recommended Technical Cutting Parameters
| Workpiece Material Category | Cutting Speed (vc) | Feed Rate (f) |
|---|---|---|
| Inconel 718 / Monel / Hastelloy Roughing | 30 - 65 m/min (100 - 215 SFM) | 0.18 - 0.40 mm/rev (0.007 - 0.016 ipr) |
| Nimonic / Waspaloy / Stellite Alloys | 20 - 50 m/min (65 - 165 SFM) | 0.15 - 0.35 mm/rev (0.006 - 0.014 ipr) |
This WNMG0804 / WNMG431 indexable matrix requires standard external or internal negative turning toolholders with a 95° approach angle.
Browse Matching MWLNR/L & WWLNR/L Toolholders →4. Product Application Scenarios
The AC5015S superalloy grade offers superior tool security across severe industrial components:
5. Toolholder & Equipment Compatibility
Strictly compliant with indexable geometric standard pocket seating, this insert integrates natively into global standard hardware:
- External Shank Holders: MWLNR2020K08, MWLNR2525M08, WWLNR2525M08 (Metric) / MWLNR16-4B, WWLNR16-4B (Imperial).
- Boring Bars (Internal): A32S-MWLNR08, A40T-MWLNR08 (Minimum bore clearance diameter >= 40mm).
- Lathe Integration: Optimized for high-rigidity CNC turning centers (Mazak, DMG Mori, Okuma, Haas) utilizing high-volume flood coolant delivery to maximize chip clearing and heat dissipation.
6. Industrial Grade Comparison Matrix
| Brand | Equivalent Grade Reference | Application Range | Coating Properties |
|---|---|---|---|
| SUMITOMO | AC5015S (Target) | ISO S10 - S20 / Advanced Interrupted HRSA & Superalloy Roughing | Absotech Tough PVD Titanium-Aluminium Nitride Matrix |
| Sandvik Coromant | GC1105 / GC1205 | ISO S15 / HRSA Interrupted Profile Cutting | PVD multi-layer thin film coating |
| Kennametal | KCS10B / KCS20B | ISO S10 - S20 / Shock-Resistant Superalloy Machining | High-Al content AlTiN PVD system |
| Iscar | IC804 / IC806 | ISO S10 - S20 / High-Impact Exotic Metal Turning | AlTiN PVD hard coating layer |
7. Why Choose Us & Verified Global Performance Evaluations
Real-world machine shop metrics proving structural edge stability and wear control under heavy impact:
"We rough machine Inconel 718 aerospace rings with severe slot discontinuities. Most inserts chip immediately at the depth-of-cut line. Sumitomo's AC5015S grade with the EX breaker has given us predictable tool life and amazing notch wear control."
"Hervorragende Wendeschneidplatte für Nickelbasislegierungen. Die Kombination aus zähem Substrat und EX-Geometrie verhindert Ausbrüche bei stark unterbrochenem Schnitt zuverlässig."
"Il controllo del truciolo con il rompitruciolo EX è eccellente anche su materiali pastosi come il titanio e l'inconel a forti avanzamenti."
"耐熱合金の断続加工で抜群の耐塑性変形性を示します。境界摩耗が抑えられるため、長時間の無人運転でも寸法変化が少ないです。"
8. Technical Machining FAQ
Q: Why does the AC5015S grade perform better than standard grades on nickel-based alloys?
A: HRSAs like Inconel generate extreme thermal loads at the tool-chip interface, causing rapid plastic deformation. The AC5015S grade utilizes a highly rigid fine-grain carbide core that resists collapsing under heavy load, paired with Sumitomo's Absotech PVD layer to form an ultra-stable thermal and chemical barrier.
Q: How does the EX chipbreaker counteract boundary notch wear in exotic metals?
A: Notch wear is heavily driven by the work-hardened line formed by the material's outer skin. The EX chipbreaker incorporates a highly positive rake and a reinforced edge land that actively lowers cutting forces at the depth-of-cut line, sliding chips cleanly away from the boundary line to protect the insert pocket.
Q: Is flood coolant mandatory when running this insert?
A: Yes. High-volume flood coolant, or preferably high-pressure coolant (HPC) focused directly on the cutting zone, is highly recommended when machining HRSAs. Coolant prevents the material from bonding to the rake face (reducing built-up edge) and aids in thermal dissipation, which is crucial for extending tool life.
💡 Technical Grade Comparison & Troubleshooting Guide
Workpiece Material Matrix (ISO Classifications): Primary application domain covers ISO S10 to S20 parameters. Explicitly optimized for continuous-to-heavily interrupted cutting of nickel-based superalloys (Inconel 718, Inconel 625), cobalt-based alloys (Stellite), and specialized heat-resistant aerospace materials.
Machining Troubleshooting Guide: If severe plastic deformation occurs at the edge, reduce the cutting speed (vc) or select a harder grade. If mechanical chipping occurs at the depth-of-cut boundary line, introduce variable depths of cut to vary the impact zone, or lower the feed rate (f).
Authorized Reference Documentation & Endorsements: Dimensional configurations, pocket seating tolerances, and naming structures fully comply with the ISO 1832:2017 industrial standards blueprint. Mechanical strength thresholds, thermal crack criteria, and wear tolerances are cross-referenced from verified test catalogs published by Sumitomo Electric Hardmetal Corp.
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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.