Introduction
Cold-bending equal-sided channel steel is a kind of shaped steel, which is widely used in many application areas.It is one of the important engineering structural members that are widely applied in steel engineering, machinery manufacturing and other fields.It can also be used as frame and frame parts to increase the intensity, stiffness and special requirements of the structure and components.This paper introduces in detail the introduction, technical parameters and application areas of cold-bending equal-sided channel steel GB6723-86.
Introduction
Cold-bending equal-sided channel steel is a kind of steel with a C cross-section.It is one of the important engineering structural members that are widely applied in steel engineering, machinery manufacturing and other fields.Its specifications range from 4-25mm, and the wall thickness of the steel ranges from 4-18mm.It has better mechanical properties, good bending performance and welding performance.GB6723-86 sets the requirements for the quality and indexes of steel items under the standard of cold-bending equal-sided channel steel.
Technical parameters
1. Chemical composition of cold-bending equal-sided channel steel: C: 0.12-0.20%, Si:≤0.35%, Mn: 0.50-1.20%, S ≤0.035%, P ≤0.035%, Cu ≤0.30%.
2. Mechanical properties including tensile strength 305-420 N/mm2, elongation after fracture ≥12%.
3. Surface defects of cold-bending equal-sided channel steel: rust, pitting, indentation, itch, normalization notch, oxidation and other surface defects are not allowed.
4. The permissible deviation of cold-bending equal-sided channel steel should conform to the provisions of GB9787-88.
Application
Cold-bending equal-sided channel steel is widely used in many areas, such as building structures, bridges, vehicles, ships and other industrial structures.It can also be used for the construction of tower column, trestle, bridge truss and other parts.In machinery manufacturing and other fields, cold-bending equal-sided channel steel plays an important role in the stability and rigidity of the structure and components.The cold-bending equal-sided channel steel GB6723-86 has excellent mechanical properties and weldability, which is suitable for high-temperature and low-temperature working environment.
Conclusion
Cold-bending equal-sided channel steel is a kind of shaped steel with wide application areas, which can be divided into hot-rolled and cold-bend.For cold-bending equal-sided channel steel of GB6723-86 standard, the chemical composition and mechanical properties should meet the requirements, and the surface should be free of defects.In addition, it has good welding performance and is suitable for high-temperature and low-temperature working environment, which is widely used in the manufacturing of building structures, bridges, vehicles, ships and other industrial structures.
