Mitsubishi TPMN160304 NX2525 | High-Gloss Cermet Turning Insert
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TPMN160304 NX2525
Mitsubishi Materials | Large-Scale High-Gloss Finishing Specialist
Industrial Precision for Mirror-Finish Boring
The Mitsubishi TPMN160304 NX2525 is a premium Cermet turning insert designed for high-speed finishing operations. The NX2525 grade is a specialized ceramic-metal composite that offers superior resistance to Built-Up Edge (BUE) and plastic deformation. With its 16mm edge length and 0.4mm radius, this long-tail precision insert is the ultimate choice for achieving mirror-like surface lusters in large-scale CNC boring of carbon and alloy steels.
NX2525 Cermet | TPMN Flat-Top Geometry | 16mm Heavy-Duty Edge
Technical Code Identification
Triangular Shape
11° Positive Relief
M-Class Tolerance
Flat-Top (No Chipbreaker)
16.5mm Edge Length
3.18mm Thick
0.4mm Radius
Cermet Grade
ISO (Metric) vs ANSI (Inch) Comparison
| Feature Spec | ISO (Metric) | ANSI (Inch Equivalent) |
|---|---|---|
| Model Number | TPMN160304 | TPMN 321 |
| Inscribed Circle (IC) | 9.525 mm | 0.375" (3/8") |
| Thickness | 3.18 mm | 0.125" (1/8") |
NX2525 Cermet Technology
The NX2525 Cermet grade provides a unique combination of high wear resistance and superior chemical stability. Because Cermet has a much lower affinity for steel than tungsten carbide, it virtually eliminates chip welding. This allows the tool to maintain a sharp edge for longer durations, resulting in the signature high-gloss finish Mitsubishi is known for.
TPMN Flat-Top Geometry
The TPMN geometry is a flat-top design without a molded chipbreaker. This provides maximum edge strength and a sharp cutting action. It is specifically intended for stable finishing passes where the feed rate is low and the focus is purely on surface quality and dimensional accuracy in steel turning.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Mild/Carbon Steel | 150 - 350 m/min | 0.05 - 0.15 mm/rev | 0.1 - 1.2 mm |
| Alloy Steel (Hardened) | 120 - 280 m/min | 0.05 - 0.12 mm/rev | 0.1 - 1.0 mm |
COMPATIBLE HOLDERS
Designed for high-rigidity CTFPR/L 16 or CTGPR/L 16 boring bars.
Shop 16mm Boring Bars →
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This Mitsubishi 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.