Steel PNG Transparent Images

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Steel is the most important building material in the world, is an iron alloy containing 0.2 to 2% carbon by weight. Steel is important for the economic stability of every developing country in the world. The steel industry provides more than 50 billion dollars of economic activity only in the United States.

Such as countries like China and Russia, put enormous demandsfor steel-straining full capacity steel suppliers.

History Of Steel: The advent of commercial steel production in the late of the 19th century was the result of Sir Henry Bessemer’s creation of an effective way to reduce the carbon content in cast iron. By reducing the amount of carbon in the iron to about 2%, the metal product is much more malleable and more harder product of steel is produced.

Production Of Steel: At present, most of the steel is produced by basic oxygen methods (also known as base oxygen steel or BOS). BOS derives its name from a process that requires the oxygen to be blown into a large vessel containing molten iron and steel scrap.

Although BOS accounts for the largest share of global steel production, the use of electric arc furnaces (EAF) has been growing since the early 20th century and currently accounts for about a one third of the total steel production.

Steel Grades: According to the World Steel Association, there are more than 3,500 different steel grades covering unique physical, chemical and environmental properties. You might be wondering how there can be so many different steel grades when the steel consists only of iron and carbon.

This is due to the fact that the amount of carbon, as well as the level of impurities and other alloying elements determine the properties of each grade of steel, and these combinations reach very high numbers.

Properties Of Steel: Different types of steel are manufactured in accordance with the characteristics required for their use, and various rating systems are used to classify steels based on these properties, including density, melting point, thermal conductivity,elasticity, strength and hardness (among others).

According to the American Institute of Iron (AISI), steel can be classified into four groups by their chemical composition:

Carbon Steels (which include low-carbon, medium-carbon, high-carbon steels).
Alloy Steels (which include metals such as an alloy such as manganese, chromium, nickel, silicon).
Stainless Steels (containing about 10% of chromium are classified as ferritic, martensitic and andaustenitic).
Tool steels (which have become alloyed with high-temperature and hard metals, such as tungsten and molybdenum).

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