Blade Bobtail 80/Sc from Brisa Knives Finland - one of the most famous knife companies from Finland, is made for surface mounting, blade height 25 mm, length - 80 mm, butt thickness 3.5 mm. The total length of the workpiece is 173 mm. Descents are Scandinavian. 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 Bobtail 80/Sc blade has a slight lowering of the butt line towards the tip - something between the blade action, called Normal Blade and Drop-Point, looks very impressive and gives the knife profile both elegance and aggressiveness.
The shank for surface mounting has 2 mounting holes and one large technological cutout, which serves to reduce the weight of the handle and improve the balance of the finished knife. Mounting holes are made for inch sizes of ties (or pins). Closer to the end of the handle there is a hole for a lanyard pin or a tube (Lanyard Hole) with a diameter of 6.3 mm. On the opposite side of the handle, closer to the blade, there is a 4.6 mm hole for the Corby tie (Corby Hole). Traditionally, the installation of overlays for this knife is done using only two holes - a lanyard hole and a hole for a tie, but for beauty and reliability, you can install the pin anywhere in the technological cutout.
The blade is laser engraved with the logo of one of the brands under which Brisa knives are produced - EnZo and the brand of steel from which it is made - this is the famous Sandvik 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 as follows:
Chemical composition in % (nominal):
Carbon (C) - 0.60%
Chromium (Cr) - 13.5%
Molybdenum (Mo) -
Silicon (Si) = 0.40%
Manganese (Mn) - 0.40%
The unique characteristics of Sandvik 12C27 steel, which allow it to always be at the top of the knife ratings, is simply explained, Sandvik 12C27 is one of the few steels designed specifically 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 continuous improvement in quality indicators, increase in density .
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