PROPERTIES OF AUSTENITE STAINLESS STEEL X8CrNiS18-9 MICROALLOYED WITH TELLURIUM.

More recently modified stainless steels have been used to produce various structural elements that work in complex operating conditions. Stainless steel X8CrNiS18-9 (standard EN 10088-3: 2005) is the most commonly used austenitic stainless steel due to its good machinability. This steel has high mechanical and working properties thanks to complex alloying, primarily with the elements such as chromium and nickel. The content of sulphur present in the steel from 0.15 to 0.35% improves machinability. However, sulphur at the same time decreases the mechanical properties, particularly toughness. The addition of sulphur, which is the cheapest available additive for free machining, will impair not only the transverse strength and toughness but also the corrosion resistance. The aim of this work is to determine the influence of tellurium on the machinability, corrosion resistance and mechanical properties of the mentioned steel. [ABSTRACT FROM AUTHOR]