Future Steel Buildings, Business, Page 10
Future Steel Buildings
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4 | Properties of Structural Steel
Following properties of structural steel are considered before
using them for a construction. These properties are useful for
determining the quality of steel. High quality steel is used so that
dependable and long lasting construction is possible.
Density of a material is defined as mass per unit volume.
Structural steel has density of 7.75 to 8.1 g/cm3.
2. Elastic Modulus
Elastic modulus or modulus of elasticity is the measurement of
tendency of an object to be deformed when force or stress is
applied to it. Typical values for structural steel range from 190-
3. Poisson's Ratio
It is the ratio between contraction and elongation of the
material. Lower the value, lesser the object will shrink in
thickness when stretched. Acceptable values for structural steel
are 0.27 to 0.3.
4. Tensile Strength
Tensile strength of an object is the determination of limit up to
which an object can be stretched without breaking. Fracture
point is the point at which an object breaks after application of
stress. Structural steel has high tensile strength so is preferred
over other materials for construction.
5. Yield strength
Yield strength or yield point is the stress at which an object
deforms permanently. It cannot return to its original shape
when stress is removed. Structural steel made of carbon has