Blade Briza Carver 150 from Brisa Knives Finland - one of the most famous knife companies from Finland, is made for surface mounting, blade height 28 mm, length - 150 mm, butt thickness 2 mm. The total length of the workpiece is 260 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, significantly improve the cutting properties of the knife, but such a construct is quite laborious to implement, therefore it is 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 Briza Carver 150 blade is a good kitchen all-rounder with Scandinavian descents from the butt and a blade projection slightly tucked up to the tip. A slight understatement of the butt line to the tip (Drop-Point), looks very impressive and gives the knife profile both elegance and aggressiveness. There are 5 mounting holes on the shank for surface mounting, a lanyard slot and one large technological cutout, which serves to reduce the weight of the handle and improve balancing the finished knife. Mounting holes are made for inch sizes of ties (or pins). Closer to the blade, there are three holes: one, in the center, under the Corby coupler (Corby Hole) by 4.6 mm and two on the sides of it - pin (Pin Hole) under 4 mm. On the back side of the handle there are mounting holes for the Corby coupler (Corby Hole) by 4.6 mm, a hole by 6.5 mm and a lanyard slot 12x45mm. The installation of linings for this knife can be done using only two holes for ties and two for pins, but for beauty and reliability, you can install the pin anywhere in the technological cutout. The blade is laser engraved with the logo of the brand under which the knives are produced - Brisa and the steel grade from which it is made is the famous 12C27. The guide to steels says about it 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% for making knives. Most other steels, which have compositions that are much more burdened with master alloys and many times higher cost, are usually developed for other narrower technological tasks that are far from knife topics (for example, for the manufacture of molds or cutting tools with large sharpening angles, etc.). P.). Therefore, for the manufacture of blades, such steels can only be adapted with varying degrees of success. 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 the most recommended steel for the production of high-quality top-class knives. Sandvik 12C27 steel is hardenable from 54 to 61 HRC. However, like most Finnish knives, Sandvik 12C27 blades are hardened to a hardness of 58-59 HRC. This hardness is generally recognized as optimal for kitchen knives. Plus, if you need to use this knife outdoors, at low temperatures, in the cold (when the temperature drops, the hardness of the steel increases and the blade, which has high hardness values, becomes brittle like glass) - a value of 58-59 HRC is also an optimal indicator.
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