High-silicon spring alloy steel with outstanding corrosion resistance and strength. Contains 2% silicon/manganese and 0.60% carbon. Has density of 7.85 g/cm³ and is machinable in annealed condition. Weldable by most methods except oxyacetylene welding
Steel is made of iron and carbon with various elements for specific applications. Edge retention measures knife's ability to maintain sharpness during use. Toughness indicates resistance to chipping and breaking. Corrosion resistance affects both appearance and structural integrity. Ease of sharpening depends primarily on wear resistance
3cr13 is a Chinese martensitic steel used in knife production. Undergoes two heat treatment phases: quenching and tempering. Contains 13% chromium for corrosion resistance
D2 steel contains 1.4-1.6% carbon and 11-13% chromium. Achieves hardness of 57-62 HRC through heat treatment. Offers moderate corrosion resistance and good toughness. Contains molybdenum (up to 0.8%) and vanadium (up to 1%)
San mai refers to steel blades with hard hagane edge and iron/stainless jacket. Term means "three flat things" in Japanese, used since 1300 AD. Technique dates back at least 2000 years to ancient Chinese kingdoms
Ichiro Hattori started knife making at age 18 in his father's factory. Founded Hattori Hamono K.K. in 1971 to produce sporting knives. Known for OEM work with major U.S. companies since 1970s