The increase in the carbon content in the steel composition reduces the ductility of the material, that is, it causes it to show brittle properties. In addition, the tensile strength can increase up to a point. But besides this increase, malleability, ductility, and toughness decrease. Alloying Elements and How They Effect the SteelĬarbon, the main alloying element of steel Increases mechanical properties such as strength, hardness, and mechanical resistance. For this reason, very large compression strength is not required. It will not carry any spares on the material. The corrosion resistance of the material should be kept high. For this reason, the risk of corrosion is high. Therefore, it is very important to determine the area of use and which features are most important during this use.įor example, when designing a faucet for a home user, this material will frequently come into contact with water.

Expecting a material to give all the properties in the best way is both very difficult and very costly. Manufacturers, on the other hand, produce materials that meet the expectations by adjusting these compositions according to the expectations in the area of use of the material they produce. Each alloying element adds different properties to steel at different rates. The properties of steel vary depending on the carbon composition and alloying elements it contains. Some changes are made in the features according to the usage areas. Steel It is used in many different fields such as kitchen appliances, household appliances, automotive, petroleum industry, leather industry, chemical industry, pump and compressor parts, aviation, nuclear industry. Steels according to the alloying element in their composition High alloy steels contain more than 5% alloying elements in their composition. Low alloy steels contain less than 5% alloying elements in their composition. We can classify steels in 3 different ways according to their composition: 1. Some impurities may be formed during alloying and it may contain small amounts of other elements as a result of external factors. A eutectic transformation occurs at 727 ̊ C degrees containing 0.76% carbon composition by weight.Ĭarbon is the main alloying element of steel. From this composition to the carbon composition of 6.7% by weight, it is cast iron. We name alloys formed up to 2.14% carbon content in iron as steel. Iron and carbon alloys can be classified into steel and cast iron. The liquid steel produced is shaped as ingot by casting or as a billet or bloom by continuous casting method. Alloying elements have very critical role on steel properties. Especially in the last 2 centuries, humanity has benefited from steel and alloying elements very well. We can examine this alloying process from the iron-carbon balanced diagram. Recycling from iron ore or scrap can be used for steelmaking. Steels are produced by alloying iron with carbon.

Mn element use