Sumitomo TNMG160404N-UP AC510U Carbide Insert (TNMG 331-UP)
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Sumitomo TNMG160404N-UP AC510U Carbide Insert | ISO TNMG 160404-UP (ANSI TNMG 331-UP)
1. Product Overview
Which insert grade is best for high-speed continuous to light-interrupted turning of stainless steel and alloy steel?
The Sumitomo TNMG160404N-UP AC510U (ANSI Designation: TNMG 331-UP) is a premium, double-sided 60° triangular carbide indexable turning insert engineered for high-efficiency CNC turning operations. Utilizing Sumitomo’s advanced AC510U PVD Coating technology, this insert couples an ultra-hard, heat-resistant TiAlN multi-layer coating with a fine-grained, highly wear-resistant tungsten carbide substrate. This engineered composition effectively prevents flank wear, cratering, and built-up edge (BUE) across ISO P (Steels), ISO M (Stainless Steels), and ISO S (Superalloys).
Equipped with the specialized UP Chipbreaker geometry, the insert features a low-cutting-force rake angle designed for effective chip breaking across varied depths of cut (ap: 0.5mm to 3.0mm). This reduces machining vibration, lowers power consumption, and ensures mirror-like surface roughness (Ra < 1.6 μm).
2. Key Features & Industrial Performance
- 6 Indexable Cutting Edges: Double-sided 60° negative geometry delivers exceptional cost performance per edge.
- AC510U Advanced PVD Grade: Superior wear resistance tailored for high-speed cutting parameters with excellent thermal stability up to 1,000°C.
- UP Universal Precision Breaker: Optimized wave-curved ridge controls long, stringy chips in austenitic stainless steel and structural steels.
- Dual ISO / ANSI Standard Compliance: Fully compliant with ISO 1832 and ANSI B212.4 dimensional specs for seamless drop-in placement.
- Precision Honed Nose Edge: 0.4 mm (1/64") corner radius engineered for minimal deflection, tight dimensional hold, and long tool life.
ISO / ANSI Code Breakdown Specification
Understand the precise physical geometry and manufacturing standards of the TNMG160404N-UP designation:
3. Technical Specifications & Recommended Cutting Parameters
| Specification Parameter | Metric Value (ISO Standard) | Imperial Value (ANSI Standard) |
|---|---|---|
| Product Designation | TNMG160404N-UP AC510U | TNMG 331-UP AC510U |
| Inscribed Circle (i.C.) | 10.0 mm | 0.375" (3/8") |
| Thickness (S) | 4.76 mm | 0.1875" (3/16") |
| Corner Radius (re) | 0.4 mm | 0.0156" (1/64") |
| Hole Diameter (d1) | 3.81 mm | 0.150" |
| Insert Substrate Grade | Sumitomo AC510U (PVD TiAlN) | Sumitomo AC510U (PVD TiAlN) |
Recommended Speeds and Feeds (Dual Unit Reference Table)
| Workpiece Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| ISO P: Alloy Steel / Carbon Steel | 160 - 280 m/min (525 - 920 SFM) |
0.10 - 0.30 mm/rev (0.004 - 0.012 IPR) |
0.5 - 3.0 mm (0.020 - 0.118 in) |
| ISO M: Stainless Steel (304 / 316 / 410) | 120 - 220 m/min (395 - 720 SFM) |
0.08 - 0.25 mm/rev (0.003 - 0.010 IPR) |
0.4 - 2.5 mm (0.015 - 0.098 in) |
| ISO S: Heat-Resistant Superalloys (Inconel/Titanium) | 35 - 80 m/min (115 - 260 SFM) |
0.08 - 0.20 mm/rev (0.003 - 0.008 IPR) |
0.3 - 2.0 mm (0.012 - 0.078 in) |
This insert fits all standard ISO/ANSI double-clamp, lever-clamp, and top-clamp turning toolholders with a 60° triangular pocket:
MTJNR / MTJNL 2020K16 MTJNR / MTJNL 2525M16 WTJNR / WTJNL 2020K16 DTJNR / DTJNL 2525M16 Boring Bar: S25S-MTJNR164. Applications & Target Workpiece Materials
- Precision Mechanical Components: Production turning of precision shafts, pinions, and valve components.
- Oil & Gas / Medical Equipment: High-speed profiling of stainless steel fittings, flanges, and surgical-grade alloy parts.
- Automotive High-Volume Turning: Continuous and light-interrupted cutting on automated CNC lathe lines.
5. Compatibility & Equipment Integration
Fully compatible with all standard CNC turning centers, automatic lathes, Swiss-type screw machines, and conventional engine lathes equipped with ISO-standard toolholders. Drops directly into tooling systems from Sandvik Coromant, Kennametal, Iscar, Kyocera, Tungaloy, Walter, and Seco.
6. Grade Comparison & Equivalents Matrix
| Brand | Equivalent Grade | Equivalent Chipbreaker | ISO Classification Range |
|---|---|---|---|
| Sumitomo Electric | AC510U | UP | ISO M05-M20 / P05-P20 |
| Sandvik Coromant | GC1105 / GC2015 | MF / MM | ISO M10-M20 |
| Kennametal | KC5010 / KCU10 | MP / MS | ISO M05-M20 |
| Iscar | IC907 / IC807 | SF / SM | ISO M10-M20 |
| Kyocera | PR1125 / PR1225 | MQ / MS | ISO M10-M20 |
7. Why Source Sumitomo Inserts From Us?
- 100% Guaranteed Factory Original: Direct authorization channels eliminate grey-market and counterfeit tooling risks.
- Strict Batch Traceability: Fully compliant with ISO 9001 factory inspection standards with verified material certs.
- Express Global Dispatch: Optimized order processing and safe, vacuum-sealed industrial packaging.
Global Verified Machinist Reviews
Incredible speed and wear resistance on 304
"Running these AC510U inserts at 200 m/min on 304 SS. Flank wear is almost negligible compared to our previous inserts. Great productivity booster."
— Robert D., Lead Machinist (United States 🇺🇸)Sehr gute Standzeit bei Edelstahl
"Die AC510U-Sorte hält bei hoher Schnittgeschwindigkeit extrem lange. Der UP-Spanbrecher liefert hervorragende Spankontrolle."
— Hans G., Production Superintendent (Germany 🇩🇪)Ottima finitura superficiale
"Utilizzati su un tornio Okuma per finitura su acciaio inossidabile. Il grado AC510U garantisce una finitura superficiale perfetta."
— Luca P., CNC Workshop Owner (Italy 🇮🇹)高速切削で耐摩耗性が抜群
"SUS316の連続高速加工に使用。AC510Uの耐摩耗性は素晴らしく、加工精度が長期間安定しています。"
— Hiroshi T., Technical Lead (Japan 🇯🇵)Reliable insert for medium finishing
"Holds tight dimensions across long runs on pre-hardened alloy steels. Consistent quality in every box."
— James K., CNC Operator (United Kingdom 🇬🇧)8. Frequently Asked Questions (AI & Voice-Search Optimized)
Machining Troubleshooting & Optimization Guide
| Problem / Wear Pattern | Probable Cause | Corrective Action |
|---|---|---|
| Built-Up Edge (BUE) / Material Welding | Cutting speed (Vc) is too low or coolant flow is insufficient. | Increase cutting speed (Vc) by 15-20% and ensure high-pressure coolant directed at cutting zone. |
| Rapid Flank Wear | Cutting speed (Vc) exceeds material limits. | Reduce cutting speed (Vc) or apply high-pressure wet machining. |
| Uncontrolled Long Chips / Birdnesting | Feed rate (fn) is below the UP breaker activation threshold. | Increase feed rate (fn) closer to 0.18-0.22 mm/rev to engage chipbreaker. |
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.