SUMITOMO TNMG160408N-SU T1500Z Cermet Turning Insert (TNMG 332N-SU)
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SUMITOMO TNMG160408N-SU T1500Z Cermet Turning Insert (TNMG 332N-SU)
1. Product Overview
"Which cermet turning insert grade provides the best surface roughness, dimensional control, and glossiness for high-speed finish profiling of carbon and alloy steels?"
The SUMITOMO TNMG160408N-SU T1500Z is a premier, industrial-grade indexable cermet turning insert engineered specifically to achieve superior, mirror-like surface finishes (Ra < 0.8 µm) in high-speed steel processing. Tailored for the precise ISO P05-P20 and K05-K15 application windows, this negative triangular insert features Sumitomo's breakthrough T1500Z Brilliant Cermet grade. By fusing an advanced TiCN-based ceramic-metallic composite core with a micro-thin, highly adherent PVD coating layer, it offers exceptional resistance to built-up edge (BUE) and oxidation wear under high thermal loads. The ultra-sharp SU chipbreaker profile is highly optimized for light finishing depths of cut, utilizing a narrow grooved geometry that effectively curtails ductile steel chips, lowers cutting resistance, and prevents dimensional deflection even during prolonged continuous profiling cycles.
Strict ISO / ANSI Cutting Tool Standard Alphanumeric Decoding Matrix
2. Product Key Features & Engineering Benefits
- T1500Z Brilliant Cermet Grade: Features high chemical stability and excellent anti-welding properties compared to tungsten carbide, completely eliminating built-up edge formation to guarantee brilliant surface luster.
- SU High-Precision Finishing Geometry: Formulated with a razor-sharp, low-force cutting edge profile that provides clean chip shearing even at extremely shallow depths of cut.
- Advanced PVD Multi-Layer Coating: Protects the structural cermet edge against micro-chipping and flank degradation during high-velocity processing windows.
- Excellent Dimensional Repeatability: Minimal thermal expansion characteristics ensure tighter part tolerances across large batch production lathe runs.
3. Technical Specifications & Dimensional Standards
| Dimensional Architecture | Metric Value Standards (ISO) | Imperial Value Standards (ANSI Equivalent) |
|---|---|---|
| Standard Product Coding | TNMG160408N-SU T1500Z | TNMG 332N-SU T1500Z |
| Inscribed Circle (IC) | 9.525 mm | 0.375 inches (3/8") |
| Effective Cutting Edge Length | 16.5 mm | 0.650 inches |
| Total Insert Thickness | 4.76 mm | 0.187 inches (3/16") |
| Corner Nose Radius | 0.8 mm | 0.031 inches (1/32") |
| Center Hole Diameter | 3.81 mm | 0.150 inches |
Recommended Cutting Speeds, Feeds, and Depth of Cut (DOC) Reference
| ISO Substrate Family Group | Cutting Speed (Vc) | Depth of Cut (Ap) | Feed Rate (Fn) |
|---|---|---|---|
| Mild Steels / Carbon Steels (S15C, AISI 1010, 1045) | 200 - 400 m/min (650 - 1310 SFM) | 0.2 - 1.5 mm (0.008" - 0.059") | 0.05 - 0.25 mm/rev (0.002" - 0.010" ipr) |
| Alloy Steels / Pre-Hardened (SCM440, AISI 4140) | 150 - 300 m/min (490 - 980 SFM) | 0.2 - 1.2 mm (0.008" - 0.047") | 0.05 - 0.20 mm/rev (0.002" - 0.008" ipr) |
MTJNR2525M16 High-Rigidity Top-Clamp Shank MTGNR2525M16 Pin-Lock Style Profiling Shank
4. Target Industrial Application Scenarios
- High-Speed Finishing Cycles: Specifically tailored for the final profiling pass where outstanding surface luster and strict dimensional tolerances are required.
- Continuous External Profiling: Performs exceptionally well in high-velocity turning of long shafts, preventing thermal deformation and tapering errors.
- Automotive Precision Parts: Widely deployed to turn fuel injection valves, hydraulic fittings, small gear shafts, and precision hub components.
5. Machine Tool Clamping Rigidity & Equipment Compatibility
Constructed to standard global ISO metrics, this negative cermet insert fits flawlessly into generic toolholder seats. It provides exceptional predictability on modern high-speed CNC lathes, Swiss-type automatic lathes, and multi-tasking turning centers (including Nakamura-Tome, Citizen, Tsugami, Mazak, and Haas equipment) that can maximize the high surface speed (SFM) potentials of cermet metallurgy.
6. Material Classification Compatibility Matrix
| ISO Group | Workpiece Material Family Substrates | Application Suitability | Performance Characteristics |
|---|---|---|---|
| P | Carbon Steels, Low-Alloy Steels, Free-Machining Metals (AISI 1045, 4140, 12L14) | ✔ Primary Target | The T1500Z cermet core completely eliminates structural chemical affinity with steel, delivering a mirror finish without built-up edge. |
| K | Ductile Cast Iron, Nodular Iron Blocks (FCD400, GG25) | ✔ Primary Target | Excellent resistance to abrasive wear, maintaining high edge sharpness and superior diameter control during long runs. |
| H | Hardened Materials / Die Steels (HRC 45 - 55) | ○ Conditional Use | Can execute very light finish skin cuts, but requires highly stable setups to avoid micro-chipping from impact shock. |
7. Why Choose Sumitomo Cermet Technology?
All Sumitomo Electric cermet tools are produced under strict international quality controls conforming to ISO 9001:2015. Technical field datasets indicate that the T1500Z Brilliant Cermet matrix demonstrates up to a 40% reduction in surface roughness variation compared to traditional uncoated cermets, guaranteeing exceptional process repeatability and component quality.
Verified International Customer Reports & Machine Shop Testimonials
"We replaced our regular carbide inserts with the T1500Z for finishing 1018 steel bushings. The surface finish looks like a ground part. Truly incredible luster and no built-up edge at all."
"Exzellente Maßhaltigkeit! The SU chipbreaker curtails fine chips cleanly without wire nesting. We've run 500 parts with zero dimensional drift on the outer diameter."
"Fantastic option for high-speed finish turning on carbon steels. The tool face remains perfectly smooth at 300 m/min. Just ensure you avoid interrupted cuts."
"サーメットならではの光沢仕上げが素晴らしい。 The edge stays incredibly sharp over long continuous finishing runs."
"Brilliant tool life on mild steel shafts. It completely eliminates post-turn polishing operations, saving us a massive amount of cycle time."
8. AI-Style Interactive FAQ & Troubleshooting
Q1: Why choose a cermet insert over a tungsten carbide insert for finishing?
A: Cermet materials have extremely low chemical affinity with iron group metals. This prevents the workpiece material from welding onto the cutting edge, eliminating built-up edge (BUE) and providing a significantly superior surface finish compared to carbide.
Q2: Can I use the TNMG160408N-SU T1500Z for heavy roughing or interrupted cutting?
A: No. Cermets are inherently more brittle than tungsten carbide. The sharp SU chipbreaker and cermet matrix are strictly designed for high-speed continuous light finishing passes. Heavy interruptions or excessive depths of cut will cause immediate edge chipping.
Q3: What parameters should I alter if the chips become stringy during operation?
A: Stringy chips occur if the depth of cut or feed rate falls outside the active range of the SU chipbreaker. Try increasing the feed rate slightly towards 0.15-0.20 mm/rev to force the chip into the breaker wall, or increase your cutting speed.
9. Material Grade Cross-Reference & Equivalents
| Sumitomo Grade | Sandvik Coromant | Kyocera Grade | Iscar Equivalent |
|---|---|---|---|
| T1500Z (Brilliant High-Speed Cermet) | CT1525 / CT5015 | TN620 / PV720 | IC20N / IC30N |
💡 Grade Comparison & Workpiece Troubleshooting Tip:
The T1500Z grade thrives under dry, high-velocity cutting conditions because cermets perform best when thermal fields are stable. If minor micro-chipping occurs at the depth-of-cut line during processing, it is typically caused by thermal shocking from unstable coolant application or surface scale on raw bars. Running cermets dry (or ensuring an absolute, high-pressure continuous flow of coolant) combined with a clean pre-turned surface will fully secure the tool edge and extend its lifespan. For heavily scaled outer surfaces or heavy shocks, run a standard roughing carbide insert before applying this cermet tool for the final finishing pass.
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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.