BESSEY Main Catalogue Clamping- and Cutting Technology Page 181
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BESSEY CUTTING TOOLS LEXICON 4. Grades The service life of edges depends directly on the grades of steel used and processing. High-performance snips with case-hardened HSS-edges particularly fulfill the most stringent requirements regarding the service life and consistent cutting performance. Cutter heads of the HSS-TiN grade are additionally coated with extremely hard titanium nitride that reduces wear and tear. Other cutting materials, namely special high quality steel, high quality steel and standard quality steel, are available depending on the application and the frequency of use. min. hardness Rockwell C Durability Continuous, straight and curved cuts, right HSS-TiN 65 +++++ Continuous, straight and curved cuts, left HSS 65 ++++ Special high quality 61 +++ High quality steel 59 ++ Standard quality steel 56 + Quality of steel The high quality of the steel at the cutting edge leads to a much longer service life of the snips. Quality of steel For maximum sheet thickness at the tensile strength of: 400 N/mm² 600 N/mm² 800 N/mm² 1100 N/mm² HSS D407..; D416..; D418..; 1.2 mm 1.0 mm 0.8 mm 0.6 mm High quality steel D202..; D206..; D207..; D208..; D214..; D216..; D218..; 1.2 mm 1.0 mm 0.8 mm -- Standard quality steel D102..; D106..; D107..; D114..; D116..; D118..; D146..; D159..; D70..-D77..; D122N; D122A 1.2 mm Normal metal snips Quality of steel 1.0 mm 0.8 mm -- 600 N/mm² 800 N/mm² 1100 N/mm² HSS-TiN D27AH-TiN* 1.5 mm 1.2 mm 1.0 mm 0.8 mm HSS D27AH* 1.5 mm 1.2 mm 1.0 mm 0.8 mm 2.0 mm 1.5 mm 1.2 mm 1.5 mm 1.2 mm 1.0 mm 1.2 mm 1.0 mm 0.8 mm 1.5 mm 1.2 mm 1.0 mm Special high quality steel D17ASS D29SS*; D29ASS*; D29BSS*; D39ASS* D15A High quality steel D08..; D16..; D17A; D22A D27*; D27A*; D27B* Short, straight and narrow curved cuts, left Straight and curved cuts with a large radius in both left and right directions Continuous, straight cuts Short, straight cuts, notch Circular cuts L = Left cut design (refer to page 2 as well) SB = On carded hang pack Standard tin snips with a rocker spring, available on request for an extra charge. For maximum sheet thickness at the tensile strength of: 400 N/mm² Hand snips with leverage Short, straight and narrow curved cuts, right -- -- * Snips can be stressed for up to 3 x 0.6 mm (1.8 mm) for a short period of time for cutting the seams. Caution! Manual sheet metal snips may only be used to cut thin sheets of soft metals and steel. They are not suitable for cutting through round or rectangular section metal shapes such as wires for example. 3 181
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