Description
⇒Commonly used materials
Q235 45# 20# 40CR A3
⇒Uses and performance
Performance parameters
Mechanical properties: The mechanical properties of square steel mainly include tensile strength and yield strength. For example, the tensile strength of No. 45 hot-rolled square steel ≥ 600 MPa and the yield strength ≥ 355 MPa, which means that the steel is able to withstand large tensile forces without breaking when subjected to tensile action1.
Plasticity: Plasticity refers to the ability of a metal material to produce plastic deformation under load without breaking.
Hardness: Hardness is an index to measure the degree of hardness of metal materials, and the commonly used methods are Brinell hardness (HB), Rockwell hardness (HRA, HRB, HRC) and Vickers hardness (HV) and so on2.
Fatigue : The ability of a square steel to work under cyclic loads, i.e., fatigue strength.
Impact toughness: the ability of square steel to resist damage under impact load 2.
use
Square steel is widely used in a variety of fields, mainly including:
Construction: Square steel is often used in light steel structures, such as steel roof trusses, civil residential skeletons, etc. 3.
Machinery manufacturing: used to manufacture various mechanical parts, agricultural machinery parts, tools, etc. 3.
Fine decoration: stainless steel square steel is used more in fine decoration, such as doors and windows 4.
Other fields: square steel is also used in shipbuilding, solar power brackets, steel structure engineering, power engineering, agricultural machinery, glass curtain walls, automobile chassis, boiler construction, highway railings, housing construction, pressure vessels, oil storage tanks, bridges, power station equipment and other welded structural parts with higher loads.
