SUMITOMO TCMT110204N-SU AC530U Titanium & Inconel Turning Insert | TCMT21.51 (7° Positive Triangular)
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1. Product Overview
Which 60° positive triangular insert provides the highest notch wear resistance and edge toughness when turning titanium alloys (Ti-6Al-4V) and nickel-based superalloys (Inconel 718) under difficult interrupted cutting conditions?
The SUMITOMO TCMT110204N-SU AC530U (ANSI designation: TCMT21.51) is an industrial-grade, 7° positive relief triangular turning insert developed by Sumitomo Electric Hardmetal. Powered by SUMITOMO's advanced AC530U Absotech® Super-PVD Coating Grade, this insert is specifically engineered to defeat work hardening, thermal cracking, and severe notch wear across ISO S20–S30 heat-resistant superalloys (HRSA) and ISO M25–M35 stainless steel machining applications.
Featuring a precision 0.4 mm (1/64") nose radius for sharp contouring, neutral edge preparation, and the 3D SU General-Medium Chipbreaker, the TCMT110204N-SU excels at suppressing radial heat buildup, preventing tool chatter on low-rigidity setups, and curling tough, gummy alloy chips for continuous evacuation in CNC turning centers and internal boring bars.
ISO / ANSI Model Code Breakdown
2. Key Features
- Absotech® Super-PVD Coating Technology: Formulated with a high-harndess TiAlSiN nano-multilayer coating that maintains extreme oxidation resistance up to 1,100°C.
- High Thermal Shock & Fracture Toughness: Combines an ultra-fine grain carbide substrate with super-adhesion PVD layer to eliminate micro-chipping during interrupted cuts.
- Sharp 0.4 mm Nose Radius: Drastically reduces radial tool pressure, preventing work-hardening on heat-resistant superalloys and workpiece deflection on small diameters.
- SU Low-Resistance Chipbreaker: Optimally curved positive 3D rake groove breaks stringy chips efficiently across light to medium depths of cut.
- Universal ISO/ANSI Compatibility: Standardized geometry fits all metric (STGCR/STFCR) and imperial screw-clamp toolholders.
3. Specifications & Dual-Unit Comparison
| Specification Parameter | Metric Unit (ISO Standard) | Imperial Unit (ANSI Standard) |
|---|---|---|
| Insert Designation | TCMT110204N-SU | TCMT21.51 |
| Inscribed Circle (IC) | 6.35 mm | 0.250" (1/4") |
| Thickness (S) | 2.38 mm | 0.094" (3/32") |
| Corner Radius (RE) | 0.4 mm | 0.0156" (1/64") |
| Hole Diameter (D1) | 2.8 mm | 0.110" |
| Relief Angle | 7° Positive | 7° Positive |
| Coating Structure | Super PVD (Absotech® TiAlSiN) | Super PVD (Absotech® TiAlSiN) |
| Manufacturer / Origin | SUMITOMO / Japan | SUMITOMO / Japan |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Titanium Alloys (Ti-6Al-4V, Ti-6242) | 40 - 90 m/min (130 - 295 SFM) |
0.05 - 0.14 mm/rev (0.002 - 0.005 ipr) |
0.3 - 1.5 mm (0.012 - 0.060") |
| Inconel & Nickel Alloys (Inconel 718, Hastelloy) | 25 - 60 m/min (80 - 195 SFM) |
0.04 - 0.12 mm/rev (0.0015 - 0.0045 ipr) |
0.2 - 1.2 mm (0.008 - 0.048") |
| Duplex & Austenitic Stainless (316L, 2205) | 100 - 180 m/min (330 - 590 SFM) |
0.06 - 0.16 mm/rev (0.002 - 0.006 ipr) |
0.3 - 1.8 mm (0.012 - 0.070") |
Recommended Compatible Turning Holders & Boring Bars:
Fits all standard ISO screw-clamp external holders: STGCR/L 1212H11, STFCR/L 1616H11, and Internal Boring Bars: A12M-STFCR11, S12M-STFCR11
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, Waspaloy, René 41 | ★★★★★ (Optimal) |
| M (Stainless Steel) | Secondary Choice | 316Ti, Duplex 2205, 17-4PH, Super Austenitic | ★★★★☆ (Excellent) |
| P (Steel Alloys) | Conditional | High-Tensile Alloy Steels, Hardened Steels (<45 HRC) | ★★★☆☆ (Good) |
| K (Cast Iron) | Not Recommended | Gray Iron, Ductile Iron | ★☆☆☆☆ (Not Recommended) |
4. Applications
- Aerospace & Defense Components: Turning jet engine titanium fasteners, turbine rings, and aircraft structural brackets.
- Oil & Gas Valve Parts: Precision internal boring on Inconel 718 valve seats and high-pressure wellhead fittings.
- Medical & Chemical Equipment: Machining pure titanium implants and 316L chemical pump shafts.
5. Compatibility
Fully compliant with ISO 1832 and ANSI B212.4 international standards. Directly mounts into positive screw-clamp toolholders and boring bars from Sumitomo, Kennametal, Sandvik Coromant, Iscar, Tungaloy, and Kyocera utilizing standard M2.5 Torx screws.
6. Grade Comparison & Equivalent Models
| Manufacturer | Equivalent Grade | Equivalent ISO Insert Designation |
|---|---|---|
| SUMITOMO (Original) | AC530U (PVD) / AC5015S | TCMT110204N-SU |
| Sandvik Coromant | S05F / GC1105 | TCMT 11 02 04-SM |
| Iscar | IC806 / IC3028 | TCMT 110204-SM |
| Kyocera | PR1125 / PR1535 | TCMT 110204HQ |
| Tungaloy | AH8015 / AH8005 | TCMT110204-PSS |
7. Why Choose Us
We supply 100% factory-original SUMITOMO Electric Hardmetal cutting tools imported directly from Japan. Every box comes in factory-sealed anti-counterfeit packaging with certified dimensional lot stability and high-performance substrate coating guarantees.
Verified Customer Reviews
We turned Ti-6Al-4V aerospace pins daily. Other inserts suffered severe notch wear within 4 parts. The AC530U grade maintains sharp cutting edges up to 22 parts per corner. Exceptional tool life!
Sehr gute Standzeit bei der Bearbeitung von Inconel 718. AC530U verhindert zuverlässig Kerbverschleiß an der Schnitttiefengrenze.
Eccellente inserts per leghe di titanio. Il rompitruciolo SU taglia in modo netto senza surriscaldare il pezzo.
チタン合金加工におけるAC530Uの耐摩耗性は素晴らしいです。切削熱の発生が抑えられ、工具交換頻度が大幅に減りました。
Great insert for Hastelloy shafts. Very reliable edge line and smooth chip removal on small diameter bores.
8. AI-Style FAQ & Troubleshooting
Troubleshooting Quick Reference
| Problem Encountered | Probable Cause | Recommended Solution |
|---|---|---|
| Severe Notch Wear at Depth-of-Cut Line | Work hardening inherent to Titanium / Inconel machining | Vary depth of cut (ap) on consecutive passes or increase feed rate slightly. |
| Rapid Thermal Cracking / Spalling | Extreme heat buildup or inconsistent coolant flow | Ensure continuous high-pressure coolant supply or reduce cutting speed Vc. |
| Workpiece Deflection / Vibration | High radial force on slender shaft or boring bar | Maintain 0.4 mm corner radius, minimize bar overhang, and ensure rigid tool setup. |
Under ISO 513:2012 classification standards, SUMITOMO AC530U Super-PVD grade falls within ISO S20–S30 for heat-resistant superalloys and titanium alloys, as well as ISO M25–M35 for tough stainless steel turning applications.
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.