What are the requirements for steel performance of steel structures?

The steel structure should be used for the performance of the material

1. Higher tensile strength fu and clump yield point fy

2. Good plasticity, toughness and fatigue resistance.

3. Good processing performance.

Answer] :(1) Higher strength.

2) Sufficient deformation capacity.

3) Good processing performance.

4) Adapt to low temperatures.

5) Prevent the erosion of old and harmful media.

6) Performance to withstand repetitive loads.

7) Easy to cheat which production, ** cheap.

Steel structures often need to bear various loads under different environmental conditions and conditions, so their steel should have good mechanical properties (static, dynamic strength and plasticity, toughness, etc.) and processing technology properties (cold, hot processing and welding performance) to ensure structural safety, save steel, facilitate the processing of tung manufacturing, and reduce the price and investment.

1) Higher tensile strength and yield strength.

2) High plasticity and toughness.

3) Good process performance (including cold working, hot working and weldability).

In addition, depending on the working conditions of the structure, the steel is sometimes required to have the ability to adapt to low temperatures, pure and high temperatures, and mild and aggressive environments.

The high strength and high strength of the steel structure mainly refer to the tensile strength and high yield point of the steel. As we all know, with high strength, the steel structure will be more stable, and the entire steel structure building will be guaranteed. Good plastic plasticity refers to whether the deformation can alert the construction personnel that the steel structure may break before the brittle deformation occurs.

Good plasticity can make the steel structure stronger, so as to achieve the seismic resistance of the steel structure building. Liangsun Yan's good cold working performance steel is processed at room temperature, with good cold working performance, which means that this steel is not easy to deform or brittle in the steel structure building, and the safety of the steel structure is guaranteed from the prudence, so that the use of this building is safer. Good weldability The weldability lies in the fact that if the steel structure is easy to weld when splicing steel, it will greatly reduce the labor difficulty of workers and make the work of TAS more convenient and efficient.

This increases productivity and buys time for projects. In addition, weldability also depends on the presence or absence of cracks during the welding process. If there are cracks, then it is not the steel we can use.

Good steel has no cracks during the welding process. The durability of the car is good, and the durability refers to the service life of the steel. The longer the service life, the better it is for the customer.

Steel with a long service life is good for steel structure buildings, indicating that it has strong seismic resistance, strong deformation ability, strong plasticity, and is not easy to damage.

a.Higher tensile strength fu and yield point fy

b.High plasticity and toughness.

c.Good process performance (including cold working, hot working and weldable retardation) dIt has the ability to adapt to low temperature, high temperature and corrosive environment.

e.**Moderate.

Correct answer: ABCD

1) Higher strength (tensile strength fu and yield point fy);

2) sufficient deformation capacity (plasticity and toughness);

3) Good process performance (cold working, hot working and weldability);

4) Depending on the specific workpiece conditions of the structure, the steel is sometimes required to have the ability to adapt to low temperatures, high temperatures and corrosive environments.