SUMITOMO WNMG080404N-LU AC810P Carbide Turning Insert (WNMG 431-LU Metric & Imperial)
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SUMITOMO WNMG080404N-LU AC810P (WNMG 431-LU) Absotech Platinum CVD Carbide Steel Turning Insert
1. Product Overview
"Which carbide insert grade and chipbreaker geometry offer the ultimate plastic deformation resistance and crater wear defense during high-speed, heavy-feed rough turning of carbon and alloy steel on CNC lathes?"
The SUMITOMO WNMG080404N-LU AC810P (cross-referenced under imperial nomenclature as WNMG 431-LU) is a premium indexable cutting tool specifically engineered for high-efficiency, high-speed roughing to heavy machining operations on ISO P steel alloys. Incorporating Sumitomo's breakthrough Absotech Platinum CVD coating matrix along with the high-strength, low-resistance LU Type Chipbreaker, this double-sided negative trigon insert delivers exceptional thermal barrier stability, reliable chip breaking under deep depth cuts ($a_p$), and long-lasting flank wear resistance.
2. Product Key Features
- Absotech Platinum CVD Coating Technology: Features a high-density, crystal-oriented $\alpha$-Al2O3 (alpha-alumina) and TiCN coating structure that minimizes micro-chipping, provides an industry-leading thermal barrier, and withstands extreme heat generated at high cutting speeds ($v_c$).
- Heavy-Duty LU-Type Chip Breaker Geometry: Configured with a wide deflector basin and a reinforced cutting land. The LU profile guarantees excellent chip fracture properties during high-feed structural rough turning ($f = 0.20\text{mm/rev} - 0.50\text{mm/rev}$), preventing chip accumulation and bird-nesting.
- 6-Corner Trigon Processing Economy: The negative $80^\circ$ trigon structural configuration balances the high feeding robustness of a round shape with the clearing flexibility of a standard diamond insert, utilizing 6 distinct indexable cutting edges for maximum shop cost-savings.
- Superb Plastic Deformation Resistance: Built on a rigid, high-hardness carbide substrate, this insert successfully prevents tip deflection and edge depression when executing continuous hot cuts under heavy loads.
3. Technical Specifications & Dimension Matrix
🔍 ISO / ANSI Nomenclature Decoding Matrix
Trigon Shape ($80^\circ$)
0° Relief Angle
M-Class Tolerance
With Hole & Slots
Edge Length ($9.525\text{mm}$)
Thickness ($4.76\text{mm}$)
Nose Radius ($0.4\text{mm}$)
Steel Heavy Breaker
| Dimension Parameter | Metric Specification (ISO) | Imperial Specification (ANSI) |
|---|---|---|
| Inscribed Circle (IC) | $9.525\text{ mm}$ | $0.375\text{ in}$ (3/8") |
| Thickness (S) | $4.76\text{ mm}$ | $0.187\text{ in}$ (3/16") |
| Corner Nose Radius ($r_\epsilon$) | $0.4\text{ mm}$ | $0.0156\text{ in}$ (1/64") |
| Fixing Hole Diameter ($d_1$) | $3.81\text{ mm}$ | $0.150\text{ in}$ |
📊 Recommended Structural Cutting Parameters
| Workpiece Material Category | Cutting Speed ($v_c$) | Feed Rate ($f$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Carbon / Alloy Steels (Continuous High Speed) | $180 - 350\text{ m/min}$ ($590 - 1150\text{ SFM}$) | $0.20 - 0.50\text{ mm/rev}$ ($0.008 - 0.020\text{ ipr}$) | $1.5 - 5.0\text{ mm}$ ($0.059 - 0.197\text{ in}$) |
| Pre-hardened Mold Steels / Ductile Cast Iron | $140 - 260\text{ m/min}$ ($460 - 850\text{ SFM}$) | $0.18 - 0.45\text{ mm/rev}$ ($0.007 - 0.018\text{ ipr}$) | $1.2 - 4.0\text{ mm}$ ($0.047 - 0.157\text{ in}$) |
This WNMG0804 / WNMG432 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 metallurgical stability of the AC810P grade enables massive metal removal rates (MRR) across various high-production manufacturing industries:
5. Toolholder & Equipment Compatibility
Strictly compliant with standard indexable pocket standards, 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 $\ge 40\text{mm}$).
- CNC Hardware Systems: Fully compatible with high-rigidity CNC turning centers (Haas, Mazak, Doosan, Fanuc) equipped with heavy-duty top-clamp or lever-lock toolholders.
6. Industrial Grade Comparison Matrix
| Brand | Equivalent Grade Reference | Application Range | Coating Type |
|---|---|---|---|
| SUMITOMO | AC810P (Target) | ISO P05 - P15 / Ultra High Speed Roughing | Absotech Platinum CVD α-Al2O3 |
| Sandvik Coromant | GC4315 / GC4415 | ISO P15 / General Purpose Steel Turning | Inveio™ CVD Al2O3 |
| Kennametal | KCP10B / KC9110 | ISO P10 / High Speed Continuous Steel Cut | CVD Al2O3 TiN |
| Iscar | IC8150 / IC806 | ISO P15 / High Velocity Steel Machining | MTCVD Al2O3 TiCN |
7. Verified Global Performance Evaluations
Real-world manufacturing shop metrics demonstrating high-speed tool longevity and cycle optimization:
"We ran these on a high-speed roughing line turning 1045 steel shafts. Pushed the speed up to 950 SFM at a 0.150" depth of cut. Crater wear was almost non-existent compared to our previous inserts. Absolute time-saver."
"Hervorragende Schnittaufteilung bei hoher Schnittgeschwindigkeit. Der LU-Spanbrecher bricht die Späne perfekt und verhindert Kolkverschleiß auf unseren automatisierten Drehstromleitungen. Sehr hohe Werkzeugstandzeit."
"Ottima resistenza alla deformazione plastica su acciai legati ad alta velocità. Finitura superficiale costante per tutta la durata del tagliente. Consigliato per lotti industriali."
"自動車用鋼部品の高速粗加工ライン用に購入。AC810Pの耐塑性変形性能は圧倒的で、高温下でも刃先がダレません。 LUブレーカとの組み合わせにより切り屑トラブルが大幅に減少し、サイクルタイムの短縮に直結しました。"
8. Technical Machining FAQ
Q: Why should I choose the AC810P grade over the AC820P or AC830P versions?
A: The AC810P is a specialized ultra-hard grade designed specifically for continuous, high-velocity, high-temperature operations (ISO P05-P15). If your application involves severe shock loads or interrupted casting skins, the tougher AC830P grade is mandatory. Choose AC810P to maximize cutting velocity and wear economy in stable, rigid machining environments.
Q: What is the primary operational envelope for the LU-type chipbreaker?
A: The LU chipbreaker functions optimally during heavy rough turning where the depth of cut ($a_p$) sits between $1.5\text{mm}$ and $5.0\text{mm}$. Attempting light finishing cuts (below $1.0\text{mm}$) will result in inadequate chip deformation because the chip bypasses the breaker's raised deflector wall.
Q: Is flood cooling mandatory, or can this insert be used for dry high-speed machining?
A: Sumitomo's Absotech Platinum CVD coating features an excellent crystalline $\alpha$-Al2O3 layer that excels at blocking intense heat entry into the substrate, allowing for continuous dry turning. If you choose to run coolant, ensure high-pressure, uninterrupted delivery; intermittent flood tracking can cause thermal shock micro-cracking.
💡 Technical Grade Comparison & Troubleshooting Guide
Workpiece Material Matrix (ISO Classifications): Main application falls within standard ISO P05 to P15 profiles. Unrivaled for heavy structural turning of carbon steels, low-alloy component blocks, structural steel plates, and casting steels experiencing steady cutting friction.
Machining Troubleshooting Guide: If crater wear develops rapidly behind the cutting edge, verify that the surface velocity ($v_c$) does not exceed upper catalog thresholds, or implement rich high-pressure lubrication. If edge chipping occurs unexpectedly, examine lathe spindle rigidity and switch to a shock-resistant grade (such as AC820P or AC830P).
Authorized Reference Documentation: Sizing geometries, mechanical pocket cross-references, and manufacturing metrics adhere fully to international ISO 1832:2017 standards for indexable cutting elements. Performance characteristics are cross-verified with certified technical datasheets provided 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.