STEEL METAL STAMPING
Steel metal stampings are typically made from low carbon or what is frequently called “mild” steel. Steel is an alloy of iron and carbon, but is mostly iron. Since iron is one of the least expensive metals, and abundant supplies exist in nature, low carbon steel is usually cheaper than stainless steel, which contains other alloys, and spring steel, which has a higher content of carbon.
Steel metal stampings can be made from low carbon steel that has been “hot rolled” or “cold rolled”. Hot rolled means that the steel goes through the rolling process to achieve its final dimensions at temperatures over 1000 degrees F. As the metal cools some variation can occur, so hot rolled steel is supplied with looser tolerances. Cold rolled steel, on the other hand, is rolled to its dimensions at close to room temperature so more precise tolerances can be achieved. Hot rolled steel also has a slightly darker and rougher finish than cold rolled steel. In the metal stamping process, which type is employed depends upon the exact specifications and requirements for the metal stamping itself.
Steel metal stampings that are exposed to harsh conditions aresusceptible to rust and corrosion due to the high iron content. To protect against deterioration of the steel metal stampings from exposure, they can be manufactured from steel that has been already coated with tin or zinc (electro galvanized or hot dip galvanized) or even pre-painted. Alternatively, the steel metal stampings can be plated or painted after manufacture with a wide variety of coatings and finishes.
Steel metal stampings are used in all types of construction, and in the manufacture of furniture, house hold appliances, industrial machinery and automobiles.