TaeguTec TPMT16T304PC CT3000 Cermet Turning Insert | 10 Pcs/Box
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TaeguTec TPMT16T304PC CT3000 Inserts
High-Speed Steel Mirror Finishing & Boring | CT3000 Uncoated Cermet Grade | Box of 10 Pcs
"Which 60-degree positive triangular cermet insert with a 0.4mm corner radius and PC chipbreaker is best for high-speed mirror finishing, precision internal boring, and low-force profiling in carbon steels and alloy steels?"
The TaeguTec TPMT16T304PC CT3000 is a high-precision, single-sided, positive-rake 60° triangular turning insert engineered specifically for high-speed light finishing passes, precision internal boring, and mirror-finish profiling across carbon steels and alloy steels. Powered by TaeguTec's advanced CT3000 uncoated cermet grade—a specialized titanium carbide and titanium nitride ceramic-metal composite—this insert offers exceptional chemical stability, extreme surface hardness, and near-zero affinity for steel adhesion. Unlike conventional CVD or PVD coated carbide inserts that feature micro-roughness on their coating layers and can suffer from built-up edge (BUE) during prolonged high-speed finishing passes, the CT3000 cermet substrate resists chemical crater wear and shears steel cleanly to produce mirror-like surface finishes (low Ra values) without secondary grinding. Paired with a precision 0.4mm nose radius and the dedicated PC positive chipbreaker, it minimizes radial cutting forces to prevent chatter on slender boring bars while maintaining smooth chip curling across moderate feeds. Whether you are browsing our specialized TaeguTec TPMT collection, exploring TaeguTec TNMG inserts, or evaluating tooling solutions across the TaeguTec CNC cutting tools full catalog, the TPMT16T304PC CT3000 delivers unmatched reliability. Pair these inserts with compatible boring bars such as the Beyond S10K-STWPR11 Boring Bar or Beyond S16Q-STFPL11 Boring Bar Holder, and complement your shop setup with clamp accessories, TaeguTec drill inserts, indexable drills with WC inserts, Korloy SPMT, and ZCC-CT SPMT collections. For deep technical knowledge, review our guides on what is a carbide drill, solid vs indexable milling, CNMG cross-reference, chipbreaker families, carbide insert nose radius, stainless steel speeds and feeds, inserts by material, inserts by operation, and top global CNC insert brands.
Core Engineering Advantages
CT3000 Uncoated Cermet Grade
Titanium-based cermet composite delivers superior chemical stability and zero steel adhesion for mirror-smooth surface finishes.
PC Positive Chipbreaker
Engineered for low cutting forces and smooth chip evacuation across carbon steels during high-speed finishing operations.
0.4mm Radius & 60° Positive Geometry
Low radial cutting pressure minimizes vibration during internal boring and enables crisp corner definition on complex profiles.
ISO Code Specification Breakdown
Technical Specifications & Dimensional Comparison
| Parameter | Metric (Standard) | Imperial Equivalent |
|---|---|---|
| ISO / ANSI Designation | TPMT 16T304-PC | TPMT 321-PC (Approx.) |
| Inscribed Circle (IC) | 9.525 mm | 0.375" (3/8") |
| Thickness (S) | 3.97 mm | 0.156" (5/32") |
| Corner Radius (RE) | 0.40 mm | 0.0157" (approx. 1/64") |
| Grade & Substrate | CT3000 (Uncoated Cermet Grade) | High-Speed Steel Finishing Cermet |
Recommended Cutting Parameters
*Values are starting recommendations for high-speed mirror finishing, boring, and light profiling in steels with CT3000 cermet grade.
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (Ap) |
|---|---|---|---|
| Carbon & Low Alloy Steels (P - 1045 / 4140) | 250 - 450 m/min | 0.06 - 0.20 mm/rev | 0.20 - 1.80 mm |
| Free Cutting Steels & Structural Steels | 280 - 500 m/min | 0.08 - 0.22 mm/rev | 0.20 - 2.00 mm |
| Pre-Hardened Steels (< 35 HRC) | 180 - 320 m/min | 0.05 - 0.18 mm/rev | 0.15 - 1.50 mm |
Compatible Tool Holders & Boring Bar Resources
Pair these precision 16-size (3/8" IC) positive triangular inserts with compatible turning and boring toolholders such as the Beyond S10K-STWPR11 Boring Bar and Beyond S16Q-STFPL11 Boring Bar Holder.
Industrial Applications
- High-Speed Steel Mirror Finishing & Boring: Delivering mirror-like surface finishes (low Ra) on precision shafts, hydraulic cylinders, and internal bores without secondary grinding.
- Continuous High-Velocity Profiling: Uncoated cermet CT3000 grade resists crater wear and built-up edge during long, uninterrupted high-RPM finishing and boring cuts.
- Multi-Brand Tooling Consolidation: Fully compatible with alternate positive triangular systems across TaeguTec TPMT, Korloy SPMT, and ZCC-CT SPMT catalogs.
TaeguTec Grade Selection Matrix
Selecting the optimal TaeguTec turning grade for positive inserts:
- CT3000 (Featured - Uncoated Cermet Grade): Advanced ceramic-metal composite optimized for mirror finishing and high-speed turning in steels (ISO P), eliminating built-up edge and delivering unmatched surface finish.
- TT8125 (CVD Coated Carbide Grade): Multi-layer CVD coated carbide grade engineered for high-speed continuous turning and medium cuts in carbon steels and alloy steels where high thermal insulation is needed.
- TT9225 (PVD Coated Grade): Nano-PVD coated grade designed for general turning and stainless steel machining (ISO M) where sharp edge toughness and thermal shock resistance are vital.
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Technical Engineering Support
On-staff tooling specialists available for speed and feed recommendations.
Frequently Asked Questions
Q: When should I choose CT3000 cermet instead of CVD (TT8125) or PVD (TT9225) coated carbide?
A: Choose CT3000 uncoated cermet when your primary goal is achieving a mirror surface finish (low Ra) and tight dimensional tolerances during high-speed finishing and internal boring passes in carbon and alloy steels. Use CVD or PVD coated carbide when heavier depths of cut or interrupted cuts are required.
Q: Why select a 0.4mm corner radius (TPMT16T304PC) for internal boring?
A: A 0.4mm nose radius generates significantly lower radial cutting forces than a 0.8mm radius, preventing chatter and deflection on long-overhang boring bars while enabling crisp internal corner profiling.
Q: How many cutting edges are included in each box?
A: Each single-sided TPMT insert provides 1 precision indexable cutting edge (10 edges total per factory-sealed box).
Need Help With TaeguTec Inserts?
Looking for a TaeguTec equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This TaeguTec 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.
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