Structural Steel Properties

The properties of structural steel have a large influence on how it is used in various applications. The different properties like tensile strength, yield strength and elasticity are given a greater importance by engineers since, structural steel is used in construction. Along with the general properties like density, these properties prove to be useful in determining the quality of steel. It is only with the use of high-quality steel that dependable and long-lasting constructions are possible. Information about the different structural steel properties is dealt in this article.

Properties of Structural Steel

There are different properties which affect the performance of structural steel material. It is with the knowledge of these steel material properties that steel is transformed into various shapes for applications in the field of construction.

Density
The mass per unit volume of a material is referred to as its density. The density of steel ranges from 7.85 g/cubic cm - 8.1 g/cubic cm. Let us understand the other properties of steel through following paragraphs.

Thermal Properties
The temperature of austenizing and melting temperature are the important thermal steel properties. Temperature at which iron is converted into austenite crystal structure is referred to as austenizing temperature. This temperature for the pure form of iron is 900 °C. Addition of carbon to pure iron decreases austenizing temperature; the value of austenizing temperature for eutectic steel is 724 °C. There is also a difference in melting points of pure and carbon-added steel. The plain carbon steel has a melting point of 1130 °C. The value of melting temperature for pure steel is 1492 °C.

Tensility
It is the property which determines the limit up to which a steel material can be stretched without breaking. Fracture point is used to gauge the tensility of a given steel material. It is at the fracture point that the steel material breaks after being subjected to stress. Since, the structural steel possesses greater tensility than other construction material, it is most preferred.

Yield Strength
The capacity to resist deformity is referred to as yield strength of structural steel. The minimum force at which deformation could take place is measured in order to determine the yield strength. Crystalline and atomic structure of steel changes as a result of deformation.

Elasticity
The property of elasticity need to be understood without confusing it with yield strength. Deformation of steel takes place while it is under stress. Point of deformation is the limit for measuring the elasticity of a particular material. The Young's modulus of elasticity is used in the measurement of this property.

Structural Steel Shapes Properties

Different shapes of structural steel, according to the needs of construction project, are used. The I-beam, L-shape, Z-shape, T-shape and the rest are few of the different shapes employed to give the strength to the structure under construction. I-beam is one of commonly used shape of structural steel. Different properties/specifications are taken into account for designing the I-beam. Preventing unnecessary vibrations is one of the important points to consider when it comes to stability of the steel structure. The property of stiffness helps in reducing these vibrations. Using steel components of right amount of stiffness and mass, the vibrations in the structure can be reduced to a great extent. Making an appropriate choice for stiffness structural steel is therefore, an important task to prevent any future deformities in the structure.

The structural steel properties of tensility, elasticity and yield strength were dealt in this article. These mechanical properties of steel allow for using structural steel in works like the construction of buildings, ships, oil rigs, etc. The need of reliable and long-lasting construction materials to make these objects is fulfilled by structural steel.