The toughness of knife steel is a crucial factor in determining its ability to resist chipping, cracking, or breaking during use. While there are several knife steels that are known for their toughness, one of the toughest and most popular choices among knife makers is CPM 3V (Crucible Particle Metallurgy 3V).
CPM 3V is a high-alloy tool steel known for its excellent combination of toughness, wear resistance, and edge retention. It contains significant amounts of vanadium, which contributes to its exceptional toughness. Additionally, the particle metallurgy process used to create CPM 3V results in a finer and more uniform distribution of carbides, further enhancing its properties.
Another tough knife steel worth mentioning is CPM S7. Like CPM 3V, CPM S7 is a high-alloy tool steel known for its toughness and impact resistance. It contains chromium, molybdenum, and tungsten, which contribute to its exceptional strength and ability to handle heavy-duty tasks.
Keep in mind that toughness is just one aspect to consider when choosing a knife steel. Other factors like edge retention, corrosion resistance, and ease of sharpening also play important roles. The best knife steel for you will depend on your specific needs and the intended use of the knife. As new steel formulations and technologies emerge, the landscape of knife steels is continually evolving, so it's always a good idea to research and consult with knowledgeable sources when selecting a knife with specific steel characteristics.