Question 1

Can I substitute a P30 grade for a P10?

Accepted Answer

P30 grades are tougher but less wear-resistant than P10. Substituting P30 for P10 is acceptable for roughing operations where edge strength matters more than surface finish. For finishing, use the recommended grade or a finer-grained P10 equivalent.

Question 2

How do coating colors correspond to application?

Accepted Answer

Coating colors are manufacturer-specific and not standardized. For example, Sandvik's black coating indicates a Inveio™ layer for steel turning, while Seco's gold coating often indicates a Duratomic® layer. Always check the ISO code and application guide rather than relying on color alone.

Question 3

What does the 'GC' prefix in Sandvik grades mean?

Accepted Answer

GC stands for 'General Carbide' and indicates a cemented carbide substrate. The letter following (e.g., GC4415) is the grade designation where higher numbers generally indicate increased wear resistance. The specific formulation and coating are proprietary to Sandvik Coromant.
⚡ Calculated for Carbide-Tooling.com High-Performance Series. View Catalog →

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