Nuts and Bolts

The nuts and bolts which we will use in the manufacturing of our crane will be made of stainless steel. The nuts as well as the bolts will be coated with zinc to prevent corrosion.Stainless steel is a type of metal alloy. The components of stainless steel are iron, chromium, carbon, nickel, molybdenum and small quantities of other metals. These components are present in varied proportion in different varieties of steels. In stainless steel, the chromium content should not be less than 11 percent. The high content of chromium present in stainless steel is responsible for corrosion resistant property. In order to achieve higher resistance to corrosion nickel is added. Iron is the primary component of steel but it resists oxidation because the chromium present in the steel reacts with oxygen to form chromium oxide. It adheres to the surface of the stainless steel in the form of a tough, passive coating. In case the surface of this layer is damaged due to some chemical or mechanical effect, the chromium oxide formed, is capable of mending the damage. The strength and toughness of steel is because of the carbon present in it. With the increase in the carbon content the toughness of steel also increases