Supplementary Data: Optimization of PVD Coating Parameters for Carbide Cutting Inserts

This dataset contains the supplementary materials for the manuscript titled "Optimization of PVD Coating Parameters for Carbide Cutting Inserts to Achieve Longer Service Life", submitted to Coatings (MDPI). Contents: Figures (5 high-resolution images): Figure 1: Sequence of carbide cutting insert manufacturing using Powder Metallurgy technology Figure 2: VTC1000 PVD coating device control screen showing real-time deposition parameters Figure 3: CNC lathe (TME40) machining setup for standardized tool-life testing per ISO 3685:1993 Figure 4: Electron microscope image (Keyence VK-X1000) of a carbide insert at end of service life (VB = 0.3 mm) Figure 5: Signal-to-Noise (S/N) ratio response plots for the five PVD coating variables Data Tables (9 tables, Tables S1–S9): Tables S1–S3: Chemical purity of coating powders (TiN, TiC, Al₂O₃) Tables S4–S5: Measured and standard chemical composition of CK45 steel workpieces Table S6: Taguchi DOE parameter matrix (8 experiments, 5 variables) Table S7: Raw tool-life results for all coated and uncoated insert groups Tables S8–S9: Signal-to-Noise ratio and Mean response analyses (Minitab 2023) Experimental context: WNMH-0805 carbide inserts coated using a VTC1000 PVD device at HIAST, Damascus, Syria. Tool-life testing conducted on a TME40 CNC lathe using CK45 medium-carbon steel bars, following ISO 3685:1993.