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TaeguTec CNMG 120408 MT TT5080
High-performance TT5080 carbide insert in CNMG 120408 MT form. Negative 80° rhombic geometry, RE 0.80 mm, PVD AlTiN/TiN coating. Excels in medium rough turning of steel, stainless steel & super-alloys. Long tool life, superior wear resistance.
The CNMG 120408-MT TT5080 is a top-rated carbide insert engineered for demanding turning operations. Featuring a negative 80° rhombic geometry (CNMG style), it has an inscribed circle of 12.70 mm, thickness 4.76 mm, and a corner radius (RE) of 0.80 mm. It uses the TT5080 grade — a very hard sub-micron carbide substrate coated with PVD AlTiN/TiN, offering excellent thermal stability, resistance to built-up edge, and superior flank wear life.
It is intended for medium rough turning of steels, stainless steels, and high-temperature alloys, with depths of cut up to approx. 5 mm and feed rates from ~0.17 to 0.55 mm/rev depending on setup. The insert reduces downtime, delivers better surface finish and yields greater productivity. Ideal for applications in Automotive, Aerospace, Die & Mold and General Engineering where machining time, surface integrity, and tool life are critical.
Hook / Attention-Line:
Want longer tool life, faster cutting speeds, and significantly lower cost per component? The CNMG 120408-MT TT5080 insert delivers all three.
Key Features & Specs:
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Geometry & Size: Negative 80° rhombic (ISO CNMG) shape, inscribed circle (IC) 12.70 mm, thickness 4.76 mm, corner radius (RE) 0.80 mm.
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Grade & Coating: Grade TT5080 with PVD AlTiN/TiN coating. Offers a very hard sub-micron grain substrate with excellent flank wear resistance & high heat tolerance.
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Cutting Applications: Designed for medium rough turning of steel, stainless steel, and heat-resistant super-alloys. Depth of cut (ap) up to ~5.0 mm; feed range ~0.17 to 0.55 mm/rev depending on setup.
Why It’s a Best-Seller:
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Less downtime: The strong AlTiN/TiN coating resists high temperature and prevents built-up edge, so the insert stays sharp longer.
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Better surface finish: Thanks to precise geometry + good chip control, you get smoother finishes on stainless or high temp alloys.
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High wear resistance: The grade TT5080 & hard sub-micron carbide substrate mean excellent resistance to flank wear and edge break-outs.
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Cost efficient: With longer life, fewer insert changes, less scrap, the cost per part drops significantly.
Application Industries:
Used heavily in Automotive, Aerospace, Die & Mold, General Engineering, and Oil & Gas sectors — anywhere turning of stainless steels, super-alloys or heat resistant steels is required.
Call-to-Action:
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Frequently Asked Questions
It is ideal for steel, stainless steel, and heat-resistant / super-alloys. Its TT5080 grade excels in these materials.
The RE is approximately 0.80 mm. A larger corner radius allows for more robust cutting, better surface finish and greater strength on heavier cuts, though it requires higher feed to avoid rubbing.
Depths up to 5.0 mm (for medium rough turning); feeds in the range of ~0.17 to ~0.55 mm/rev depending on material and machine rigidity. Lower feed & DOC when starting/starter passes to avoid shock.
The PVD AlTiN/TiN coating adds heat resistance, improves adhesion, reduces built-up edge, enhances flank wear resistance, and allows higher cutting speeds — thereby increasing life and reducing cost per part.
The CNMG negative 80° rhombic insert gives a strong cutting edge, good clearance, and flexibility for external and internal turning. It's robust under tougher cutting conditions, especially in medium roughing, allowing higher depths of cut without premature failure.
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