Steel's applications can be divided into five categories: construction, energy, packaging, appliances and transport. Steel comes in a variety of forms, is relatively cheap to produce and exhibits incredible strength. These characteristics make steel the most widely-used metal on Earth.
Steel is made of iron and carbon. The carbon is alloyed with iron to make it stronger. To create steel, manufacturers must smelt out iron in ore, take out impurities and add alloys.
Manufacturers use a steel hardness chart to determine what type of steel should be used for different applications. The steel hardness chart is also used in conjunction with the Rockwell hardness chart.
Two "Real Steel" video games were made that were based on the 2011 film of the same name, one for the PlayStation 3 and Xbox 360 consoles, and one for Android and iOS devices. A robot playset similar to "Rock 'Em Sock 'Em Robots" was also released by Jakks Pacific.
A wide number of products are made of steel, including vehicles, surgical tools, kitchen appliances and utensils, nails, screws and food cans. Many buildings are built using structural steel as well.
A steel rule is a simple measuring instrument that is used for measuring distances and ruling straight lines. It is used in diverse fields, such as geometry, technical drawing, engineering and construction.
Steel weighs 7850 kilograms per cubic meter, or 489.8 pounds per cubic foot. Stainless steel weighs between 7480 and 8000 kilograms per cubic meter, depending on its exact composition. A 0.25-inch-thick steel plate weighs 10.2 pounds per square foot.
Steel standard weights are specifications that detail and ensure consistency of steel products used in construction. These standards are normally listed in books or charts that list the piece, available sizes, weight per foot and its dimensions.
The hardest steel is maraging steel. Maraging steel is a low-carbon steel that is composed of iron alloyed with 15 to 25 percent nickel and other strong metals such as titanium, cobalt and molybdenum. When chromium is added to the alloy, it creates a stainless steel.
Spring steel is a low-alloy, medium- or high-carbon steel with an incredibly high yield strength. This allows it to be flexed or bent and return to its original shape.