SUMITOMO TCGT090202L-FX AC530U Titanium & Stainless Precision Insert | TCGT1.8(1.5)0.5
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1. Product Overview
Which ultra-sharp precision insert guarantees superior surface finish Ra < 0.4 µm when finishing titanium alloys, Inconel 718, and medical-grade stainless steel in Swiss-type lathe applications?
The SUMITOMO TCGT090202L-FX AC530U (ANSI designation: TCGT1.8(1.5)0.5) is a high-precision, fully peripheral-ground 7° positive triangular insert engineered specifically for ultra-fine finish turning, micro-machining, and slender-part turning. Utilizing SUMITOMO's proprietary AC530U Absotech® PVD Coating Technology, this insert solves the critical challenges of thermal built-up edge (BUE), work-hardening, and dimensional drift in ISO S10–S30 superalloys and ISO M15–M30 stainless steels.
Featuring a micro-sharp 0.2 mm (0.008") corner radius, high-precision Class-G perimeter grinding tolerance, and the ultra-low-force 3D FX Fine-Finishing Chipbreaker, the TCGT090202L-FX minimizes cutting forces to near-zero levels. This prevents component deflection during long, unsupported cuts on Swiss CNC automatics and small-diameter internal boring bars.
ISO / ANSI Model Code Breakdown
2. Key Features
- Absotech® Nano-Multilayer PVD Coating: Extreme heat insulation and chemical inertness prevent material adhesion when cutting gummy titanium and duplex stainless steel.
- Class-G Precision Ground Perimeter: Sub-micron indexing repeatability ensures micro-inch dimensional control across large volume CNC runs.
- Ultra-Sharp 0.2 mm (0.008") Nose Radius: Eliminates radial cutting resistance, guaranteeing mirror-like surface finishes (Ra < 0.4 µm) without workpiece deflection.
- 3D FX Micro-Finishing Geometry: High positive rake angle produces smooth chip breaking even at extremely low feed rates (down to 0.02 mm/rev).
- Universal Precision Compatibility: Fits standard metric (STGCR/L, STFCR/L) and imperial toolholders across Swiss-type and conventional turning centers.
3. Specifications & Dual-Unit Comparison
| Specification Parameter | Metric Unit (ISO Standard) | Imperial Unit (ANSI Standard) |
|---|---|---|
| Insert Designation | TCGT090202L-FX | TCGT1.8(1.5)0.5 |
| Inscribed Circle (IC) | 5.56 mm | 0.2188" (7/32") |
| Thickness (S) | 2.38 mm | 0.094" (3/32") |
| Corner Radius (RE) | 0.2 mm | 0.0078" (0.008") |
| Hole Diameter (D1) | 2.5 mm | 0.098" |
| Hand Orientation | Left Hand (L) | Left Hand (L) |
| Relief Angle | 7° Positive | 7° Positive |
| Coating & Substrate | Absotech® PVD TiAlSiN + Ultra-Fine Carbide | Absotech® PVD TiAlSiN + Ultra-Fine Carbide |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Titanium Alloys (Ti-6Al-4V, Ti-6242) | 50 - 110 m/min (165 - 360 SFM) |
0.02 - 0.08 mm/rev (0.0008 - 0.0031 ipr) |
0.05 - 0.80 mm (0.002 - 0.031") |
| Inconel & Superalloys (Inconel 718) | 30 - 75 m/min (100 - 245 SFM) |
0.02 - 0.07 mm/rev (0.0008 - 0.0028 ipr) |
0.05 - 0.60 mm (0.002 - 0.024") |
| Austenitic & Duplex Stainless (316L, 2205) | 120 - 210 m/min (395 - 690 SFM) |
0.03 - 0.10 mm/rev (0.0012 - 0.0039 ipr) |
0.10 - 1.00 mm (0.004 - 0.039") |
Recommended Compatible Turning Holders & Swiss Lathe Tooling:
Fits all standard 7° positive screw-clamp holders: STGCL 0808H09, STGCL 1010H09, STFCL 1212H09, and internal boring bars: A08H-STFCL09
Workpiece Material Matrix (ISO 513 Standard)
| ISO Material Group | Suitability | Common Grade Examples | Performance Rating |
|---|---|---|---|
| S (HRSA / Titanium) | Primary Choice | Ti-6Al-4V, Inconel 718, Hastelloy C276, Waspaloy | ★★★★★ (Optimal) |
| M (Stainless Steel) | Primary Choice | 316L, 304, Duplex 2205, 17-4PH, Custom 455 | ★★★★★ (Optimal) |
| P (Steel Alloys) | Secondary Choice | Low-Carbon Steels, Bearing Steels, 4140, 8620 | ★★★☆☆ (Good) |
| K (Cast Iron) | Not Recommended | Gray Iron, Nodular Cast Iron | ★☆☆☆☆ (Not Recommended) |
4. Applications
- Swiss-Type Lathe Precision Parts: Finishing micro-diameter titanium bone screws, dental posts, and surgical pins.
- Aerospace Fuel Systems: Fine-finish boring of high-nickel alloy fuel nozzles and hydraulic connectors.
- Instrumentation & Sensors: Machining thin-walled 316L stainless steel transducer bodies requiring ultra-tight tolerance.
5. Compatibility
Fully compliant with ISO 1832 and ANSI B212.4 specifications. Directly mounts to screw-clamp external holders and precision boring bars from Sumitomo, Citizen, Star, Tsugami, Sandvik Coromant, Iscar, and Kyocera using standard M2.2 / M2.5 Torx clamping hardware.
6. Grade Comparison & Equivalent Models
| Manufacturer | Equivalent Grade | Equivalent ISO Insert Designation |
|---|---|---|
| SUMITOMO (Original) | AC530U (PVD) / AC5015S | TCGT090202L-FX |
| Sandvik Coromant | 1105 / 1125 | TCGT 09 02 02L-K |
| Kyocera | PR1125 / PR1535 | TCGT 090202L-CF |
| Iscar | IC806 / IC907 | TCGT 090202-SF |
| Tungaloy | AH725 / AH8015 | TCGT090202L-JS |
7. Why Choose Us
We supply 100% genuine SUMITOMO Electric Hardmetal tooling directly imported from Japan. Each box features factory-sealed traceability anti-counterfeit labels, strict dimensional tolerances, and guaranteed batch consistency for high-precision CNC manufacturing.
Verified Customer Reviews
We produce titanium medical bone screws on our Swiss lathes. The 0.2mm nose radius and FX chipbreaker eliminate burrs completely. Surface finish is consistently Ra 0.2 microns!
Hervorragende Präzision bei Edelstahl 316L. Keine Aufbauschneide und extrem stabile Maßhaltigkeit auch bei feinsten Schlichtoperationen.
Inserti perfetti per tornitura di precisione su Inconel 718. Ottima durata del tagliente e truciolo sempre sotto controllo.
小型自動盤でのチタン加工に最適です。AC530Uは熱に強く、微細切削でも刃先が欠けることがありません。
Excellent finishing insert for small internal bores in 316 stainless. Delivers sharp cuts with zero chatter on light passes.
8. AI-Style FAQ & Troubleshooting
Troubleshooting Quick Reference
| Problem Encountered | Probable Cause | Recommended Solution |
|---|---|---|
| Workpiece Surface Scratches / Poor Ra | Chip wrapping or feed rate too high for 0.2mm corner radius | Lower feed rate (f < 0.08 mm/rev) and optimize coolant direction onto the chipbreaker. |
| Micro-Chipping on Cutting Edge | Interrupted cut shock or insufficient rigidity in micro-tooling | Reduce depth of cut (ap), check shank overhang, or verify chucking concentricity. |
| Built-Up Edge (BUE) Formation | Cutting speed Vc is too low for stainless/titanium alloys | Increase cutting speed (Vc) by 15-20% to generate sufficient shear heat for clean chip formation. |
Per ISO 513:2012 classification standards, SUMITOMO AC530U Super-PVD grade covers ISO S10–S30 (Titanium and HRSA alloys) and ISO M15–M30 (Austenitic, Duplex, and PH Stainless Steels) for high-precision finishing operations.
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.