• Alloy Steel  Alloy Steel  Alloy steel is frequently recognizable by its use. There are many varieties of alloy steel used in the manufacture of equipment. They have greater strength and durability than carbon steel, and a given strength is secured with less material weight. Manganese steel is a special alloy steel that... Read more >>
  • Wrought Iron Wrought iron is almost pure iron. It is made from pig iron in a puddling furnace and has a carbon content of less than 0.08 percent. Carbon and other elements present in pig iron are taken out, leaving almost pure iron. In the process of manufacture, some slag is mixed... Read more >>
  • Properties of Metals Properties of Metals : Definitions All metals fall within two categories, ferrous or nonferrous.  Ferrous metals are metals that contain iron. Ferrous metals appear in the form of cast iron, carbon steel, and tool steel. The various alloys of iron, after undergoing certain processes, are pig iron, gray cast iron,... Read more >>
  • Steel   Steel, Cast Steel Steel a form of iron, contains less carbon than cast iron, but considerably more than wrought iron. The carbon content is from 0.03 to 1.7 percent. Uses  Steel is used to make nails, rivets, gears, structural steel, roles, desks, hoods, fenders, chisels, hammers, etc. Capabilities  Steel can be... Read more >>
  • Metal Tests : How to Identify Metals for Welding Metal tests enable us to identify metals for welding It is necessary to know the composition of the metal being welded in order to produce a successful weld. Welders and metal workers must be able to identify various metal products so that proper work methods may be applied. For  equipment,... Read more >>
  • Physical Properties of Metals Many of the physical properties of metals determine if and how they can be welded and how they will perform in service. Physical properties of various metals are shown in table 7-1. Color. Color relates to the quality of light reflected from the metal. Mass or density. Mass or density... Read more >>
  • Mechanical Properties of Metals The mechanical properties of metals determine the range of usefulness of the metal and establish the service that can be expected. Mechanical properties are also used to help specify and identify the metals. They are important in welding because the weld must provide the same mechanical properties as the base... Read more >>
  • Cast Iron, Steel, Wrought Iron Cast Iron, Steel, Wrought Iron All forms of cast iron, steel, and wrought iron consist of a mixture of iron, carbon, and other elements in small amounts. Whether the metal is cast iron or steel depends entirely upon the amount of carbon in it. Table 7-7 shows this principle. The... Read more >>
  • Cast Iron (gray, white, and malleable) Cast Iron Cast iron is a man made alloy of iron, carbon, and silicon. A portion of the carbon exists as free carbon or graphite. Total carbon content is between 1.7 and 4.5 percent. Uses. Cast iron is used for water pipes, machine tool castings, transmission housing, engine blocks, pistons,... Read more >>