AISI4140 alloy steel plate is a high-strength structural steel, which is widely used in various engineering fields. The chemical composition of AISI4140 alloy steel plate is composed of carbon, silicon, manganese, phosphorus, sulfur, chromium, molybdenum and vanadium. The main characteristics of AISI4140 alloy steel plate are high strength, good toughness and corrosion resistance.

The mechanical properties of AISI4140 alloy steel plate are excellent. The yield strength is more than 350MPa, and the tensile strength is more than 600MPa. The impact toughness is also very good, which can meet the needs of different engineering applications.

The heat treatment state of AISI4140 alloy steel plate can be divided into quenching and tempering state, annealing state and as-cast state. The quenching and tempering state has the best mechanical properties, but the processing technology is more complex. The annealing state has good toughness and corrosion resistance, but the strength is slightly lower. The as-cast state has the lowest mechanical properties, but the processing technology is simple.

The main application scenarios of AISI4140 alloy steel plate are bridge construction, building construction, petroleum industry, power generation industry, transportation industry and other fields. It can be used in the manufacture of beams, columns, plates, brackets and other structural parts.

Finally, we will introduce a case of AISI4140 alloy steel plate supply. In a bridge construction project in the United States, the bridge deck needed to be made of high-strength steel to meet the requirements of load-bearing capacity and durability. AISI4140 alloy steel plate was chosen as the material for the bridge deck because of its excellent mechanical properties and corrosion resistance. Through the appropriate heat treatment process and precision processing technology, the AISI4140 alloy steel plate was processed into a high-quality bridge deck that met all the requirements of the project. This case shows that AISI4140 alloy steel plate has good application prospects in the field of infrastructure construction.