International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 05 | May-2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 594 AN EXPERIMENTAL STUDY OF STAINLESS STEEL BEAM Dr.A.Anbuchezian 1 , S.Sathish Kumar 2 1 Principal, Annapoorana Engineering College, Salem – 636308, Tamilnadu, India 2 Assistant Professor, Department of Civil Engineering, Annapoorana Engineering College, Salem – 636308, Tamilnadu, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - Stainless steels have not traditionally been widely used as structural materials in building and civil engineering. Where the steels have been used for this purpose there has been some other imperative driving the design, usually corrosion resistance or architectural requirements rather than the inherent structural properties of the steel. The primary reason for this low use in structural applications is usually the perceived and actual cost of stainless steel as a material. Developments over the last 10 years, both in available materials and attitudes to durability, are now offering a new opportunity for stainless steels to be considered as primary structural materials. This paper introduces stainless steel alloys and briefly discusses the important properties and commercial aspects of these alloys relevant to structural designers. The paper also considers recent developments, particularly with respect to available alloys and considers obstacles to the wider use of stainless steels in structural engineering that are related to both supply chain costs and efficiency of design. Key Words: Beam, Bending, Specimen, Grade, Yeild INTRODUCTION Stainless steel represents one of the more recent groups of engineering materials. Although invented at the beginning of the 20th Century, it took several decades before their use became widespread. It was not until after the World War 2, that modern stainless steels were developed and commonly used. The single most important property of stainless steel is their corrosion resistance. Corrosion resistance, in combination with good mechanical properties and manufacturing characteristics, has helped establish stainless steel as an extremely versatile material which, in many cases, offers the only economically viable alternative for the designer. Stainless steel is an alloy of iron (FE) and chromium (Cr), with a controlled amount of carbon (C). They are a family of steels containing a minimum of 11% chromium, whose primary property is that of corrosion resistance. If 11% of more chromium is added, a protective, passive film will form. The higher the chromium content, the stronger the passive film. Other elements such as molybdenum (MO) and Nitrogen (N) further strengthen the passive film and improve corrosion resistance. If the passive film is removed or damaged, it will spontaneously re-form in the presence of air or water. Fig 1 MATERIAL PROPERTIES,CLASSIFICATION AND TESTS: Material Properties:  Higher corrosion resistance  Higher cryogenic toughness  Higher work hardening rate  Higher hot strength  Higher ductility  Higher strength and hardness  Higher stress resistance  A more attractive appearance  Lower maintenance Material Classification And Grades: Since their invention and initial development, the number of stainless steel grades has increased rapidly, with hundreds of different chemical compositions standardised around the world .Since the micro structure of the steel determines its properties, stainless steel have traditionally been divided into categories based on their structures. This gives a rough classification in terms of both composition and properties. The relationship between the various stainless steel classifications is summarised below and is schematically illustraded in figure . Martenstic : Are plain chromium alloys with relatively high carbon levels. Are included in the American Iron and Steel Institute (AISI)