Analysis of A573 Grade 70 cutting parts

A573 Grade 70 Chemical composition of cutting parts

The main components include iron (Fe) as the base element, the right amount of carbon (C), its content is generally 0.27%-0.33%, carbon provides the basic strength of steel; Manganese (Mn) content is relatively prominent, usually 1.20%-1.50%, manganese can effectively refine the grain, enhance the toughness of steel, improve its impact resistance, and make the steel more stable and reliable under dynamic load; Silicon (Si) also has a certain proportion, which helps to improve the strength and processability of steel; At the same time, the content of impurity elements such as phosphorus (P) and sulfur (S) is strictly controlled to prevent quality problems such as embrittlement of steel caused by excessive impurities and ensure the excellence of steel performance.

A573 Grade 70 Cutting parts Performance characteristics

High strength: As its name suggests, Grade 70 means that steel has a high yield strength. The minimum yield strength is 485MPa, and the tensile strength is generally in the range of 620MPa-760MPa. This high strength property enables it to maintain structural integrity in the face of great pressure, tension and other external forces. It is not prone to plastic deformation and provides solid support for heavy structures such as large buildings, Bridges and mechanical equipment.

Good toughness: In addition to high strength, it also has excellent toughness, which can effectively absorb energy and avoid brittle fracture in low temperature environment and under sudden impact, vibration and other working conditions. For example, in the construction of Bridges in cold areas, even if the winter temperature is very low, the structural parts made of A573 Grade 70 steel can safely and reliably carry vehicles and pedestrians, ensuring smooth traffic.

Certain corrosion resistance: In the general atmospheric environment, the surface of the steel will naturally form a layer of oxide film, can resist a certain degree of rust, although not as professional weathering steel or stainless steel, but in normal outdoor buildings, industrial plants and other scenes, through appropriate protective measures (such as coating protection), can meet the service life requirements of several years to decades, to ensure the long-term stable operation of the structure.

A573 Grade 70 Machining performance of cutting parts

Cutting performance: As the base material of cutting parts, it has good cutting adaptability, whether it is the use of flame cutting, plasma cutting or laser cutting and other common cutting methods, can obtain a more neat and smooth cutting section, the steel heat affected zone in the cutting process is relatively small, the damage to the internal structure of the material is low, basically will not affect the mechanical properties of the parts after cutting. Convenient for subsequent processing and assembly.

Welding performance: Excellent welding performance, matching with appropriate welding materials, the use of manual arc welding, gas welding and other welding processes, can form a high-strength, high-toughness weld, the strength of the weld metal can reach or even exceed the strength of the base metal, to ensure the reliability of welded joints under complex loads, which is crucial for the assembly and repair of large steel structures.

Cold working performance: with a certain cold working ability, such as cold bending, cold rolling, etc., can be processed into various shapes of steel components according to engineering design needs, in the cold working process, although the mechanical properties of steel will have certain changes, but through reasonable process control, it can still meet the corresponding structural strength and deformation requirements, to meet the diversification of industrial design.

A573 Grade 70 Cutting parts application area

Construction industry: It is widely used in the frame structure of high-rise buildings, the roof truss of long-span commercial buildings, the load-bearing beams and columns of industrial plants, etc., with high strength and good toughness, it supports the main space of the building, bears a variety of loads such as floor weight, personnel activities, and equipment placement, and ensures the structural safety of the building within the service life.

Bridge engineering: It plays an important role in the steel beams, piers and other key parts of small and medium span road Bridges and railway Bridges, providing stable support for Bridges across rivers and gullies, resisting the impact of water flow, vehicle driving vibration and natural environment erosion, and ensuring the durability and safety of Bridges.

Machinery manufacturing: Used to manufacture the fuselage frame of heavy machinery, the workbench of large presses, the boom of cranes and other components, to meet the load requirements of mechanical equipment under high-intensity operation,to ensure the stability and reliability of mechanical operation, and to improve production efficiency.