SUMITOMO TNGG160402R-FX AC530U PVD Carbide Insert | TNGG330.5R-FX
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1. Product Overview
Which precision insert is best designed for ultra-fine super-finishing cuts on tough stainless steel and heat-resistant alloys under unstable, light-cut conditions?
The SUMITOMO TNGG160402R-FX AC530U (ANSI designation: TNGG330.5R-FX AC530U) is a premium Class G fully ground, double-sided 60° negative triangular turning insert specifically engineered for high-precision super-finishing. Featuring SUMITOMO's high-toughness AC530U Super PVD Coating Grade—a specialized TiAlN multi-layer PVD coating over a micro-grain tough carbide core—this insert offers superior edge toughness, notch wear resistance, and anti-chipping capability across ISO M15–M35, S15–S30, and P15–P35 application spectrums.
Equipped with a micro 0.2 mm (0.008") corner radius, a Right-Hand (R) orientation, and the ultra-positive FX Super-Finishing Chipbreaker, this insert guarantees flawless control over bird-nesting chips at extremely light depths of cut (ap: 0.05–0.8 mm) and ultra-fine feeds (f: 0.02–0.10 mm/rev). The FX geometry drastically lowers cutting resistance, preventing chatter and dimensional drift on slender workpieces while delivering mirror-like surface finishes (Ra < 0.2–0.4 µm) on CNC Swiss automatics and precision lathes.
ISO / ANSI Designation Breakdown
2. Key Features
- Tough AC530U PVD Grade: High-fracture-toughness substrate combined with heat-resistant Super PVD TiAlN coating resists micro-chipping and notch wear in interrupted or tough alloy turning.
- Class G Fully Ground Perimeter: Exceptionally high indexing precision (±0.025 mm IC tolerance) ensures part-to-part consistency during tight-tolerance CNC production runs.
- FX Super-Finishing Geometry: Ultra-sharp rake face design controls stringy chips at extremely small cut depths (down to ap = 0.05 mm), preventing workpiece wrap and surface scratching.
- 0.2 mm Micro Radius Control: Minimizes radial push forces, enabling chatter-free machining on thin-walled or extended-overhang parts.
- 6 Cutting Edges per Insert: Double-sided negative profile provides 6 usable cutting edges, delivering maximum cost-efficiency over positive single-sided alternatives.
3. Specifications & Dual-Unit Comparison
| Specification Parameter | Metric Unit (ISO Standard) | Imperial Unit (ANSI Standard) |
|---|---|---|
| Insert Designation | TNGG160402R-FX | TNGG330.5R-FX |
| Inscribed Circle (IC) | 9.525 mm | 0.375" (3/8") |
| Thickness (S) | 4.76 mm | 0.1875" (3/16") |
| Corner Radius (RE) | 0.2 mm | 0.0078" (0.008") |
| Hole Diameter (D1) | 3.81 mm | 0.150" |
| Substrate Grade | Tough PVD Carbide (AC530U) | Tough PVD Carbide (AC530U) |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Stainless Steel (304, 316, 316L, 17-4PH) | 120 - 240 m/min (390 - 785 SFM) |
0.02 - 0.10 mm/rev (0.0008 - 0.004 ipr) |
0.05 - 0.8 mm (0.002 - 0.031 in) |
| Heat Resistant Alloys (Inconel 718, Rene 41) | 40 - 90 m/min (130 - 295 SFM) |
0.02 - 0.08 mm/rev (0.0008 - 0.003 ipr) |
0.05 - 0.6 mm (0.002 - 0.024 in) |
| Titanium Alloys (Ti-6Al-4V) | 50 - 110 m/min (165 - 360 SFM) |
0.02 - 0.10 mm/rev (0.0008 - 0.004 ipr) |
0.05 - 0.8 mm (0.002 - 0.031 in) |
Recommended Compatible Toolholders (ISO Top & Pin Clamp External Turning Holders):
Compatible with standard toolholders: MTJNR/L 2020K16, MTJNR/L 2525M16, WTJNR/L 2020K16, PTGNR/L 2020K16
Workpiece Material Matrix (ISO 513 Standard)
| ISO Material Group | Suitability | Common Grade Examples | Performance Rating |
|---|---|---|---|
| M (Stainless Steel) | Primary Choice | Austenitic (304, 316), Duplex (2205), PH Stainless | ★★★★★ (Optimal) |
| S (Exotic / Superalloys) | Primary Choice | Inconel 718, Hastelloy, Titanium Alloys | ★★★★★ (Optimal) |
| P (Steel Finishing) | Secondary Choice | Mild Steels, Carbon Steels, Alloy Steels | ★★★★☆ (Very Good) |
| K (Cast Iron) | Conditional | Ductile Iron, Gray Cast Iron (Light finishing) | ★★☆☆☆ (Limited) |
4. Applications
- Swiss Automatics Medical Components: Super-finishing of small-diameter stainless bone screws and dental pins requiring superior surface Ra.
- Precision Automotive Injectors: High-accuracy finishing on fuel system components demanding tight tolerance and zero chip bird-nesting.
- Aerospace Fastener Machining: Light finishing operations on Titanium alloy and Inconel aerospace studs and fittings.
5. Compatibility
This insert mounts into all standard ISO external turning toolholders featuring top-and-pin clamp mechanisms (MTJNR/L, PTGNR/L, WTJNR/L). Fully compatible with automatic sliding-head Swiss machines and conventional CNC turning centers from Citizen, Tsugami, Star, Haas, Mazak, Okuma, and Doosan/DN Solutions.
6. Grade Comparison & Equivalent Models
| Manufacturer | Equivalent Grade | Equivalent ISO Insert Designation |
|---|---|---|
| SUMITOMO (Original) | AC530U (Tougher) / AC520U | TNGG160402R-FX |
| Kyocera | PR1125 / PR1325 | TNGG160402R-S |
| Tungaloy | AH725 / SH730 | TNGG160402R-01 |
| Sandvik Coromant | GC1115 / 1125 | TNGG160402-SF |
| Iscar | IC807 / IC907 | TNGG 160402R-F2M |
7. Why Choose Us
We provide 100% genuine SUMITOMO Electric Hardmetal cutting tools through direct authorized supply lines. Strict quality control ensures exceptional edge sharpness and reliable batch-to-batch indexing consistency across high-volume automated manufacturing workflows.
Verified Customer Reviews
The FX chipbreaker on AC530U solved our continuous chip wrapping issue on 316L. Even at 0.08mm depth of cut, chips break cleanly into tight curls. Exceptional finish.
Ausgezeichnete Wendeplatte für Edelstahl-Feinbearbeitung! Die AC530U-Sorte hält auch leichten Schnittunterbrechungen problemlos stand.
Placchetta fantastica per le finiture su titanio. La qualità della superficie è impeccabile e la tolleranza della classe G è precisa al centesimo.
AC530Uは靱性が高く、微妙な振動がある環境でも刃先が欠けません。FXブレーカとの組み合わせで極小切り込みでも非常に綺麗に削れます。
Running these on our Tsugami Swiss lathe for Inconel shaft finishing. Tool life is very stable and surface finish meets strict flight standards.
8. AI-Style FAQ & Troubleshooting
Troubleshooting Quick Reference
| Problem Encountered | Probable Cause | Recommended Solution |
|---|---|---|
| Stringy Unbroken Chips Wrapping Tool | Depth of cut ap or feed f is below the active chipbreaking threshold | Slightly increase feed rate f or depth of cut ap into the active FX chipbreaking zone (ap > 0.05 mm). |
| Micro-Chipping on Cutting Edge | Excessive radial chatter or work-hardening in light finishing passes | Ensure rigid clamping, check tool center height alignment, and maintain steady coolant flow. |
| Thermal Wear / Rapid Flank Wear | Cutting speed Vc is too high for the AC530U tough grade core | Reduce cutting speed Vc by 10-15% or transition to the harder AC520U grade for higher speed continuous cuts. |
In accordance with ISO 513:2012 classification guidelines, SUMITOMO AC530U micro-grain PVD carbide grade balances high toughness and wear resistance, making it uniquely qualified for ISO M15–M35 stainless steel and ISO S15–S30 superalloy finishing where cutting edge fracture resistance is paramount.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.