Abstract
The purpose of these this stduy to idntify important properties and area of usage. In life meterials choosen accordinding to properties which are suitable for that circumstance. The usage area of stainless steel is very common. The objective of this research paper is which properties of stainless steel make it very popular in which areas. According to the which properties of stainless steel what can be new usage areas for stainless steel
Introduction
Iron is a chemical element with symbol Fe and atomic number 26. It is a metal. It is by mass the most common element on Earth. It forms much of Earth’s ourter and inner core. Iron exists in the wide range of oxidation states. Elemental iron is reactive to
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There are trade-off between properties of meterials.People chose materials according to desired properties. They prefered steel to iron and stainless steel to steel. Steel has high tensile strength compare to the iron. Stainless steel has some characteristic features that make it very popular in variety applications. It’s corrosion-resistant, durable and dilutable structure make stainless steel very popular in the structure. For all these reasons, stainless steel is very attractive meterials for variety of applications. By using stainless steel, different shape, colour and forms can be …show more content…
The stainless steel is highly resistant to corrosion in different conditions and its strength. A wide range mechanical properties with perfect resistance to corrosion make stainless steel very popular in the world.
The simple stainless steel alloy contains just iron and chromium. The predominant alloying elements of stainless steel is chromium. The concentration of chromium should be greater than 11 wt%. The alloys that cantains greater than 13 % chromium have body centered cubic structure from 0 K to its meilting point. They do not change the phase field to face centered cubic(F.C.C) structure form and can not be quenched to to from martensite.
Stainless steel generally classify 3 groups depending on the specific amounts of alloying elemetns in the microstructure. These groups are martensitic,ferritic, or austenitic
Martensitic
Mertensitic stainless steel are smilar to low alloys. Mertensitic stainless steel allows being heat-treated. can be hardened. They can be hardened due to addition of carbon and strengthened by heat treatment. Martensitic stainless steel usually contain up to 0.6% carbon. This carbon added to the alloys to change Fe-Cr diagrams. The carbon content of these hardenable steels affects forming and welding. To obtain useful properties and prevent cracking, the weldable martensitics usually require preheating and postweld
Iron is naturally iron oxide and purified iron rapidly returns to a similar state when exposed to air and water. This whole process can be seen below in figure 3 – ‘The corrosion
We use metals to construct all kinds of structures, from bridges to skyscrapers to elevators. The strength as well as durability of materials that are crafted out of metal make the materials ideal not only for construction but also for many other applications.
I. Martensitic stainless steels have good mechanical strength and are moderately corrosion resistant. Because of their excellent corrosion resistance and mechanical strength, martensitic stainless steels are used for manufacturing the steam turbine blades, heat exchangers, automotive components and structures, petrochemical & process piping. Properties of martensitic stainless steel can be changed by the heat treatment. Increasing productivity of any welding process while maintaining or even improving the weld quality has been the task of researchers in the field of development of welding processes. Over the years, welding methods and techniques have developed to great extent [3].
Tin was the first man made element. Malaysia and South Africa are the main exporter to USA market. Electro microscopes, one of the best technology of our world that to know each small amount of atoms easily with 10.000 times of atoms images, Periodic table is one of the source of element of the 118 elements with their symbol and protons and electrons numbers. In the periodic table more than 70 elements are metallic. One of the hunting of the elements film secrets was made, you to get more understanding of correlation between the elements and life. To be sure, chemistry of life, rare earth elements, and radioactivity are the main components of the real life. Carbon (C), Hydrogen (H), Nitrogen (N), Oxygen (O), Phosphorus (P), and Sulfur (S) area the six elements of life, CHNOPS are also the basic elements of all living things. Phosphorus is the first element isolated from living
Iron is a trace element, which is a group of minerals present in small quantities in the body. Other trace elements include copper, zinc, selenium, manganese and iodine. These minerals cannot be synthesized by the body and must therefore be supplied in the diet. Iron is the most common trace element in the human body; adult males have approximately 3.5 g iron in total, or 50 mg per kg body weight while females have about 2g total iron or 35 mg per kg bodyweight. Iron can exist in oxidation states from -2 to +6, but mainly exists in the ferrous (+2) and ferric (+3) states in biological systems. As iron has the ability to accept and donate electrons readily, it can interconvert between these two forms with ease. Thus, iron can participate in
The stainless steel columns seem to have been made by casting and then polished to achieve their current look. Casting is an artistic manufacturing process by which hot liquid materials are poured into a mould and allowed to sit until cooled and solidified. Then the Mould is taken off of the art piece or broken off the art in some cases. This method is used because of the difficulty that would arise from having to figure out how to manipulate materials such as steel or aluminum that are very hard to work
By adding up to 2%,of carbon it makes the steel tough and strong. Although it’s tough and strong, it is able to bend. To make sure that the metal doesn’t rust, it has a zinc coating on it. Iron is 26 on the periodic table,and considered an “transition metal,” meaning that it is ductile and malleable, and conduct electricity and heat. ... “Some other elements that are similar to iron are cobalt and nickel. They are the only elements known to produce a magnetic field.” Zinc is 30 on the periodic table and it is also a transition metal like iron. “The first iron used by humans is likely to have come from meteorites.” A meteorite is a meteor that survives its passage through the earth's atmosphere such that part of it strikes the ground. More than 90 percent of meteorites are of rock, while the remainder consist wholly or partly of iron and nickel. Meteors are believed to have been from the asteroid belt of Mars and
Iron is a very brittle, hard substance, that is classified as a metal in the Periodic Table of Elements. It is one of the most abundant of all the metals and its pure form rapidly corrodes from exposure to moist air and high temperatures.
A wide variety of coating alloys and wrought alloys can be prepared that give the metal greater strength, castability, or resistance to corrosion or high temperatures. Some new alloys can be used as armor plate for tanks, personnel carriers, and other military vehicles.
Iron comes from the Latin word ferrum. From ferrum its symbol became Fe. The atomic number of iron is 26, and its atomic weight is 55.845. Iron is a magnetic, bendable, shiny white metallic element.
"Using GMAW-P with Aluminum and Stainless Steel." - TheFabricator.com. Kodi Welch, 05 Nov. 2013. Web. 28 Apr. 2014.
Stainless steel is a type of alloy that has a very strong lattice structure (an arrangement/ shape of the crystals or other objects) which in some case can be more beneficial than others depending on the type of application it may be used for. In many cases this structure will make the material more suited to being used in engineering applications such as tools for instance a hammer (stainless steel alloys) , also they can be used for gears, engines, electrical motors and hydraulic systems because the structure makes the material so strong. So when the arrangement of the structure is as above it makes the overall material even stronger which makes it a good for all the applications stated above. I believe its strength and durability are its main properties as these are commonly needed in the engineering industry, although it is also very well known to be used for its corrosion resistance as it is resistant to many types of corrosion. It is used for these properties because the components such as gears need to be strong in order to keep transferring and altering the rotary motion and torque exhibited in the machine that it may be used in, durable to withstand any loads or pressure put onto it and also corrosion resistance to give the components a bigger life span and increase its rate of work throughout its required use.
A steel is usually defined as an alloy of iron and carbon with the content between a few hundreds of a percent up to about 2 wt%. Other alloying elements can amount in total to about 5 wt% in low-alloy steels and higher in more highly alloyed steels such as tool steels and stainless steels. Steels can exhibit a wide variety of properties depending on composition as well as the phases and microconstituents present, which in turn depend on the heat treatment.
Metals possess many unique fundamental properties that make them an ideal material for use in a diverse range of applications. Many common place things know today are made from metals; bridges, utensils, vehicles of all modes of transport, contain some form of metal or metallic compound. Properties such as high tensile strength, high fracture toughness, malleability and availability are just some of the many advantages associated with metals. Metals, accompanied by their many compounds and alloys, similar properties, high and low corrosion levels, and affects, whether negative or positive, are a grand force to be reckoned with.