Piano hinge 60x2500mm, stainless steel, stainless steel pin

Chromium-nickel austenitic unstabilized newly designated according to ČSN 10088-1 1.4301 (X5CrNi 18-10) old designation AISI 304, ČSN 17240, AKV 7 Alloying Cr 17 - 19.5%, Ni 8 - 10.5%, C < 0.07% Mechanical properties Tensile strength Rm 520 - 720 N/mm2 Yield strength (Rp 0.2) min. 210 N/mm2 Elongation A80mm min. 45% Annealing temperature 1000-1100°C cooling with water, intensive air. Non-magnetic Ununtouchable It tends to work harden during drawing or when chip machining with unsuitable cutting conditions Strengthening occurs by the transformation of austenite into deformation martensite, which increases strength, reduces ductility, and causes Magnetizability (drawn bars, cold-rolled sheets) from a thickness of 4 mm). For profiles with a larger cross-sectional area (bars from pr.80mm, sheets from thickness 15mm) partial may occur magnetizability in the core profile area - is caused by Residual martensite from high temperatures during production. Deformation and retained martensite can be removed by annealing. These structural changes do not affect corrosion resistance. Material and weldability. Resilience against corrosion in common environments (water, weak alkalis, weak acids, industrial and metropolitan atmospheres). Susceptibility to intergranular corrosion in the heat-affected zone (e.g., in welds - CrC forms from a temperature of 450°C). Processing technology It is weldable but prone to intergranular corrosion in the weld area. corrosion. For welds over 5mm thick, the weldment must be annealed. It is processed by cutting, bending, drawing - both methods of towing can be used, but it is more suitable for false drawing (dragging). The material is drawn from Material thicknesses The machinability of chips is good. Polishable. Usage Common products for general use (catering facilities, exterior construction, external architecture, waterworks, wastewater treatment plants, etc.) excluding welded constructions with a penetration depth over 5 mm. For such constructions, post-weld annealing followed by blasting and pickling is required. The chemical composition complies with the standard for the use of products for food and drinking water. Max temperature 450°C.