The blank for the blade BRISA Chef 185 12C27/F is made for surface mounting, blade height is 50 mm, length is 185 mm, butt thickness is 2.5 mm. The total length of the workpiece is 305 mm. Descents are made from the butt. Let us immediately note this very important point. Scandinavian descents or descents from the butt itself to the supply are quite laborious to implement, therefore they are inherent only in very good and expensive blades. The workpiece is sharpened, at first glance the knife is very sharp. But this is just a technological sharpening, which indicates the angle that the manufacturer recommends for sharpening this product in the future. Therefore, looking ahead, let's say that after manufacturing the knife should still be sharpened for real. The name of this blank model for a knife on the manufacturer's website is BRISA Chef 185, outwardly the blade is very similar to a Japanese Gyuto style knife. The manufacturer's logo is embossed on the blade - BRISA and the grade of steel from which it is made. BRISA is a very famous Finnish brand. One of the features of the products of this company is the high-precision processing of workpieces, which is achieved by using the latest technological advances in the production process. In practice, this translates into perfect clarity and symmetry of the products, it is pleasant to work with them, BRISA blades require a minimum of modifications before installation, and most often do not require them at all. A few words about the steel from which the blade is made is the famous Sandvik 12C27. In reference books on steels, it is said that it is a corrosion-resistant martensitic chromium knife steel of the Swedish company Sandvic AB (Sweden), produced since the 60s of the XX century, which has a low content of impurities - sulfur and phosphorus. In other words, Sandvik 12C27 is perhaps the most balanced knife steel that simultaneously has excellent sharpening characteristics (easy to sharpen - hard to dull, and it really is!), high strength and corrosion resistance. For the curious, the density of Sandvik 12C27 steel is 7.7 g / cm3, and its chemical composition is: Chemical composition in% (nominal): Carbon (C) - 0.60% Chromium (Cr) - 13.5% Molybdenum (Mo ) - Silicon (Si) = 0.40% Manganese (Mn) - 0.40% Sandvik 12C27 is one of the few steels designed specifically for making knives. The production technology of Sandvik 12C27 steel is constantly being improved, which leads to a constant improvement in quality indicators, an increase in density and purity, and an improvement in the fine microstructure of carbides. Therefore, modern Sandvik 12C27 steel is very different from the prototype 45 years ago. Sandvik 12C27 has high impact strength, excellent retention of cutting properties under various mechanical loads and good corrosion resistance. All this makes Sandvik 12C27 steel the most recommended for the production of high-quality top-class chef's knives. Sandvik 12C27 steel can be hardened in the range from 54 to 61 HRC. However, the hardness of this steel is 58 HRC, which is optimal for use in the kitchen.
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