Selection Guidance for WIDIA's The carbide coating grade are as follows:
Coated carbide grade TN5515 has an MT-CVD-TiN-TiCN-Al203 coating. Engineered for a balanced toughness and wear ratio. Ideal for light to medium machining of all cast irons.
Coated carbide grade TN6510 has a PVD-TiAlN multilayer. It performs well in light to medium machining of all cast irons.
Grade TN6520 has a PVD-TiAlN multilayer. It is engineeered for light and medium machining of all types of cast irons.
Carbide grade TN6525 has aPVD-TiAlN multilayer. It is ideal for light and medium machining applications in steels and high-strength nodular cast irons.
Coated carbide grade TN6540 has a PVD-TiAlN multilayer and is excellent for medium and heavy machining applications. It is ideal for use in all steels and nodular cast irons.
Detailed WIDIA's insert catalog are available for download here
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