SUMITOMO WNMG080404N-GU AC810P (WNMG 431-GU) Carbide Turning Insert
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SUMITOMO WNMG080404N-GU AC810P (WNMG 431-GU) High-Speed CVD Carbide Steel Continuous Turning Insert
1. Product Overview
"Which indexable carbide insert grade and chipbreaker geometry are most effective for eliminating crater wear and maintaining strict surface finish requirements during continuous, ultra-high-speed turning of highly abrasive carbon and alloy steels?"
The SUMITOMO WNMG080404N-GU AC810P (internationally designated under imperial nomenclature as WNMG 431-GU) is a premium indexable turning insert designed engineered specifically for high-efficiency, ultra-high-speed continuous turning of steel. Utilizing Sumitomo’s proprietary Absotech Platinum CVD coating technology over an ultra-hard, wear-resistant substrate matrix, the AC810P grade delivers exceptional thermal protection and crater wear control. Paired with the low-cutting-force GU Type Chipbreaker geometry, this double-sided negative trigon insert maintains long, predictable tool life and tight structural dimensional tolerance under severe high-velocity dry or wet machining conditions.
2. Product Key Features
- Absotech Platinum CVD Coating Matrix: Formulated with an ultra-smooth, highly dense micro-structured Al2O3-TiCN coating with advanced crystal orientation control. This layout dramatically suppresses thermal deformation, peeling, and adhesion-induced chipping at elevated cutting edge temperatures.
- Medium-Duty GU-Type Chip Breaker: Features a robust deflector design and an optimized positive rake land configuration. It provides wide coverage chip management, effectively lowering cutting forces by up to 15% and preventing bird-nesting or chip scratching on finished steel faces.
- Ultra-Hard High-Performance Substrate: The AC810P grade incorporates a highly specialized structural gradient cemented carbide matrix designed for extreme wear resistance. It resists severe mechanical friction and nose melting during high-sfm continuous cutting paths.
- 6 Economical Indexable Edges: The negative 80-degree trigon structural profile maximizes tool economy, providing 6 distinct indexable cutting corners per insert while ensuring absolute stability inside standard pocket configurations.
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)
Medium Breaker
| 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 Structural Cutting Parameters
| Workpiece Material Category | Cutting Speed (vc) | Feed Rate (f) |
|---|---|---|
| Carbon Steels (1045, S45C Ultra-High Velocity) | 250 - 450 m/min (820 - 1480 SFM) | 0.10 - 0.35 mm/rev (0.004 - 0.014 ipr) |
| Alloy Steels (4140, SCM440 Continuous Turning) | 200 - 380 m/min (650 - 1250 SFM) | 0.08 - 0.30 mm/rev (0.003 - 0.012 ipr) |
This WNMG0804 / WNMG431 sequence 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 AC810P ultra-hard CVD composition offers unmatched cycle efficiency in high-output modern manufacturing environments:
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 diameter >= 40mm).
- Machine Support Guidelines: Tailored for high-rigidity high-power CNC lathes (Mori Seiki, Mazak, Okuma, Haas) capable of maintaining stable spindle velocity during maximum metal removal rates.
6. Industrial Grade Comparison Matrix
| Brand | Equivalent Grade Reference | Application Range | Coating Properties |
|---|---|---|---|
| SUMITOMO | AC810P (Target) | ISO P05 - P15 / Extreme High-Speed Continuous Steel Turning | Absotech Platinum Hard CVD Al2O3-TiCN |
| Sandvik Coromant | GC4315 / GC4415 | ISO P10 / High-Efficiency Stable Steel Turning | Inveio Textured CVD Coating |
| Kennametal | KCP10B | ISO P10 / High-Speed Steel Component Machining | CVD Diamond-Like Hard Al2O3 Layer |
| Iscar | IC8150 | ISO P10 / Precision Steel Cutting at High SFM | CVD Multi-Layer Textured Coating |
7. Why Choose Us & Verified Global Performance Evaluations
Real-world machine shop metrics proving structural edge stability and wear control under high speed:
"We are running these at 1200 SFM on 1045 steel bar stock. The crater wear resistance on the AC810P grade is far ahead of anything else we have tested. GU breaker keeps the chip narrow and controlled."
"Fantastische Verschleißfestigkeit bei maximaler Schnittgeschwindigkeit. Die Absotech Platinum Beschichtung bietet eine überragende thermische Barriere. Perfekt für CNC-Serienfertigung."
"Ideale per la tornitura continua ad alta velocità su acciai legati. Finitura superficiale eccellente e spedizione molto rapida."
"S45Cの高速連続加工自動盤で使用しています。AC810Pは耐摩耗性が非常に高く、長時間の切削でも刃先寸法が変化しません。他社コーティングに比べてクレーター摩耗の進行速度が圧倒的に遅く、仕上げ面の粗さも安定しています。"
8. Technical Machining FAQ
Q: Why should I choose the AC810P grade instead of the all-around AC820P steel grade?
A: The AC810P grade is highly optimized specifically for ultra-high-speed continuous machining (ISO P05-P15) where maximum flank and crater wear resistance are paramount. If your setup involves heavy mechanical impact, heavily interrupted cuts, or unstable rigidity, the tougher AC820P or AC830P grade sequence is recommended. Choose AC810P when you intend to maximize surface feed velocities on clean, uninterrupted steel paths.
Q: What is the optimal cutting window for the GU chipbreaker geometry on high-speed lines?
A: The GU chipbreaker features a highly balanced universal rake structure. Even at high cutting speeds, it smoothly manages chips at a depth of cut between 0.5mm and 3.0mm. The engineered deflector wall lowers standard cutting resistance, which reduces thermal generation on the nose radius during long continuous machining cycles.
Q: Is flood coolant required when operating the AC810P grade at maximum cutting speeds?
A: Not necessarily. The advanced Absotech Platinum CVD coating acts as a superior thermal barrier layer, allowing the insert to thrive under dry cutting environments. If you decide to employ flood coolant for dimensional stability on long parts, maintain highly consistent high-pressure flow to eliminate any risk of thermal micro-cracking.
💡 Technical Grade Comparison & Troubleshooting Guide
Workpiece Material Matrix (ISO Classifications): Primary application domain covers ISO P05 to P15 parameters. Engineered for continuous high-speed finishing and medium turning of clean carbon steels, low-alloy structural blocks (1045, S45C), and structural chrome-moly alloys (4140, SCM440).
Machining Troubleshooting Guide: If sudden micro-chipping or premature cutting corner fracturing occurs, verify structural lathe spindle alignment, or decrease cutting speed (vc) and migrate to a tougher AC820P or AC830P grade. If immediate thermal deformation or nose flattening occurs, verify that your surface velocity is matched to the specific alloy brinell hardness bounds.
Authorized Reference Documentation: Sizing constraints, indexable pocket parameters, and structural dimensional tolerances are fully compliant with the international ISO 1832:2017 regulatory framework. Performance speed data and tool envelopes are cross-referenced with authorized technical datasets published by Sumitomo Electric Hardmetal Corp.
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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.