Sumitomo TNGG160402R-FY AC530U PVD Carbide Insert | TNGG330.5R-FY
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1. Product Overview
Which precision ground insert provides the cleanest chip control and longest tool life when finish-turning sticky 316L stainless steel and heat-resistant alloys?
The SUMITOMO TNGG160402R-FY AC530U (ANSI counterpart: TNGG330.5R-FY AC530U) is an ultra-precision Class G perimeter-ground, double-sided 60° negative triangular turning insert engineered for delicate finishing operations. Featuring SUMITOMO's proprietary AC530U Super PVD Coating Grade—a high-density TiAlN/AlCrN multi-layer coating deposited on a micro-grain tough carbide substrate—this insert delivers outstanding notch wear resistance, superior heat dissipation, and exceptional edge toughness across ISO M15–M35, P15–P35, and S10–S25 machining spectrums.
Configured with a 0.2 mm (0.008") micro corner radius, a Right-Hand (R) cutting orientation, and the specialized FY Fine-Finishing Light-Cut Chipbreaker, this insert eliminates chip wrapping and thread-like stringers. Its sharp rake-angle geometry reduces cutting forces, prevents work-hardening on austenitic stainless steels, and ensures stable sub-micron surface tolerances (Ra < 0.4 µm) during high-speed precision lathe production.
ISO / ANSI Designation Breakdown
2. Key Features
- Class G Precision Ground Outer Diameter: Guarantees exceptional indexing repeatability (±0.025 mm IC tolerance) for Swiss-type automatic lathes and precision toolroom CNCs.
- Super PVD AC530U Multi-Layer Coating: Smooth surface coating prevents build-up edge (BUE) and reduces friction when turning gummy materials like 304, 316, and duplex stainless steels.
- 0.2 mm Micro Corner Radius: Dramatically lowers radial pressure and deflection, preventing workpiece chatter on long shafts and thin-walled parts.
- Specialized FY Chipbreaker Geometry: Sharp cutting edge and optimized rake angle break light chips clean at feeds as low as f = 0.03 mm/rev and depth of cut ap = 0.05 mm.
- 6 Usable Cutting Edges: Double-sided negative triangular geometry lowers overall cost-per-edge while providing high mechanical rigidity.
3. Specifications & Dual-Unit Comparison
| Specification Parameter | Metric Unit (ISO Standard) | Imperial Unit (ANSI Standard) |
|---|---|---|
| Insert Designation | TNGG160402R-FY | TNGG330.5R-FY |
| 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 | Super PVD Coated Micro-Grain Carbide | Super PVD Coated Micro-Grain Carbide |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Stainless Steel (304, 316L, 17-4PH) | 120 - 240 m/min (390 - 780 SFM) |
0.03 - 0.12 mm/rev (0.001 - 0.005 ipr) |
0.05 - 1.2 mm (0.002 - 0.047 in) |
| Low & Alloy Carbon Steels (1045, 4140) | 150 - 300 m/min (490 - 980 SFM) |
0.03 - 0.15 mm/rev (0.001 - 0.006 ipr) |
0.05 - 1.5 mm (0.002 - 0.059 in) |
| Heat Resistant Alloys (Inconel, Titanium) | 40 - 90 m/min (130 - 295 SFM) |
0.03 - 0.10 mm/rev (0.001 - 0.004 ipr) |
0.1 - 1.0 mm (0.004 - 0.039 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), Martensitic (420), Duplex (2205) | ★★★★★ (Optimal) |
| P (Steel Finishing) | Primary Choice | Carbon Steels (1018, 1045), Alloy Steels (4140, 8620) | ★★★★☆ (Very Good) |
| S (Exotic / Superalloys) | Secondary Choice | Titanium Grade 5 (Ti-6Al-4V), Inconel 718, Hastelloy | ★★★☆☆ (Good) |
| K (Cast Iron) | Conditional | Ductile Iron, Malleable Iron (Light finishing cuts only) | ★★☆☆☆ (Limited) |
4. Applications
- Medical Device Manufacturing: Ultra-fine finish turning of bone screws, orthopedic pins, and surgical fittings made from 316LVM and titanium alloys.
- Swiss Machining Precision Parts: External turning on Citizen and Star CNC sliding-head machines requiring extremely tight diameter tolerances.
- Aerospace & Fluid Fittings: Turning high-precision stainless steel hydraulic connectors and fuel lines where strict surface finish limits apply.
5. Compatibility
This insert fits all standard ISO turning toolholders equipped with top-and-pin locking mechanism systems (MTJNR/L, PTGNR/L, WTJNR/L). Fully compatible with automatic CNC lathes from manufacturers including 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 / AC520U | TNGG160402R-FY |
| Kyocera | PR1125 / PR1310 | TNGG160402R-AH3 / TNGG330.5R |
| Tungaloy | AH725 / SH730 | TNGG160402R-01 |
| Sandvik Coromant | GC1125 / 1115 | TNGG160402-SGF |
| Iscar | IC907 / IC908 | TNGG 160402R-F3M |
7. Why Choose Us
We deliver 100% genuine SUMITOMO Electric Hardmetal cutting inserts sourced directly through authorized distribution channels. Original factory packaging and stringent lot traceability ensure uncompromised manufacturing standards for automated precision shop floors.
Verified Customer Reviews
The FY chipbreaker paired with AC530U is a lifesaver on 316L stainless. No more birds-nesting or continuous long stringy chips wrapping around the spindle on our Citizen machines.
Exzellente Standzeit bei Edelstahl. Die Class-G Schleifgenauigkeit garantiert exakte Wiederholgenauigkeit nach dem Plattenwechsel.
Placchette eccellenti per finitura su Inox. Il rivestimento PVD AC530U dura molto di più rispetto ai normali inserti in metallo duro.
AC530Uの耐摩耗性とFYブレーカの切屑分断性能の組み合わせは、ステンレス細物加工で非常に安定しています。
Switched over from another brand for finishing 304 shafting. The surface finish is consistently brilliant and chip breaking is spot-on.
8. AI-Style FAQ & Troubleshooting
Troubleshooting Quick Reference
| Problem Encountered | Probable Cause | Recommended Solution |
|---|---|---|
| Workpiece Surface Scratches | Chips are not curling properly and are dragging along the turned surface | Slightly increase feed rate f or depth of cut ap to fully engage the FY chipbreaker wall. |
| Premature Flank Wear | Cutting speed Vc is too high for the stainless steel workpiece hardness | Reduce cutting speed Vc by 15–20% and ensure adequate flood coolant coverage. |
| Edge Chipping / Micro Breakage | Excessive deflection or dynamic instability on thin workpieces | Verify tool holder center height and ensure stable clamping on the tool shank. |
According to ISO 513:2012 specifications, SUMITOMO AC530U PVD coated carbide grade offers superior toughness and resistance to thermal shock compared to standard CVD coated grades during light, interrupted finishing cuts on stainless steels and superalloys (ISO M15–M35 / S10–S25 range).
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.