On February 10, 2026, a flexible packaging converter in Milan, Italy, reported that replacing standard steel shear blades with a tungsten steel cutting blade for slitting metallized PET laminates tripled mean time between tool changes, because the abrasive aluminum oxide coating on the film rapidly wears softer alloys. Previously, operators changed blades every five production days (approximately 200,000 linear meters), but after installing a tungsten carbide cutting blade, the same blade completed 620,000 linear meters over 18 consecutive shifts before any edge dullness was detected. The blade’s submicron grain structure—average particle size 0.6µm—provided edge retention 2.8 times longer than the previous tool. This reduced machine downtime from 9 hours per month for changeovers to just 2.5 hours, boosting overall equipment effectiveness by 5.7%. Quality control checks showed that the ultra-hard cutting blade produced slit edges with less than 5µm of film stringers, compared to the prior average of 22µm, which had caused sealing defects. For converters processing high-abrasion films, tungsten steel slitting blades deliver clear ROI within one quarter.