1045 Steel Plate

1. High strength and good toughness: After quenching and tempering, the tensile strength of 1045 steel plate can reach 570-700 MPa, while maintaining an elongation of ≥18%, enabling it to withstand high loads without becoming brittle easily. Through different heat treatment processes, the hardness of 1045 steel plate can meet various requirements from machining to wear-resistant surfaces.
2. High cost-effectiveness and reliable supply: The carbon content and alloy elements of 1045 steel are relatively low, with raw material costs being 20%-30% lower than those of alloy steel, and the production process is mature, ensuring a steady supply.
3. Strong adaptability: Galvanizing or black oxidation treatment can extend the service life of 1045 steel plates in humid environments to over 10 years, meeting the needs of outdoor equipment.

1. Mechanical Manufacturing: After heat treatment (quenching and high-temperature tempering), the tensile strength of 1045 steel plate reaches 600-800 MPa, and the yield strength is ≥ 355 MPa, meeting the requirements for medium load transmission. Therefore, it can be used in manufacturing gears, shafts, and molds.
2. Automotive Industry: The hardenability of 1045 steel plate is moderate, making it suitable for heat treating medium to large cross-section parts while avoiding the quenching crack risks associated with high carbon steels like 1095. It meets the impact resistance requirements of vehicle suspension systems and is commonly used in automotive transmission systems and structural components.
3. Cutting Tools: The hardness of 1045 steel plate after quenching is 50-60 HRC, ensuring stability under sustained high stress, with a lifespan four times longer than low carbon tool steels such as 1020. Additionally, 1045 steel plate has a low wear rate and is commonly used for tools, drill bits, end mills, and similar applications.
4. Construction and Engineering Structures: The atmospheric corrosion resistance of 1045 steel plate is better than that of ordinary carbon steel, with a lifespan of over 10 years after galvanization. It is appropriate for outdoor structures and can be used to make bridge supports, track connectors, hydraulic frames, and more.
5. Agricultural Machinery: The benefits of high hardness and low cost make 1045 steel plates ideal for manufacturing large-scale agricultural equipment, such as threshing drums, plow blades, sprockets, gears, and more.

1045 steel plate (medium carbon steel) can enhance its performance through various heat and surface treatment processes to suit different application needs.

Heat Treatment Processes

1. Annealing:The annealing process helps reduce internal stresses in 1045 steel plates, lowers hardness, and improves machinability—making the material more suitable for further machining.
2. Normalizing: Normalizing can refine the grain structure and achieve uniformity, thereby enhancing hardness, tensile strength, elongation, and other mechanical properties. This process is suitable for structural components that require high toughness.
3. Quenching: Quenching can greatly improve the surface hardness of 1045 steel plates and produce a high-hardness martensite structure.
4. Tempering: This process relieves stresses caused by quenching and fine-tunes the balance between hardness and toughness for better performance.
5. Case Hardening: Enhances high surface hardness and high toughness in the core.
6. Carburizing: Increases surface carbon content, enhancing quenching hardness, suitable for gears and pins that withstand impact.

Surface Treatment Processes

1. Galvanizing: Prevent atmospheric corrosion.
2. Nickel Plating: Improve wear resistance and chemical stability.
3. Sand Blasting: Clean the surface and increase roughness to enhance coating adhesion.
4. Phosphating: Forms a rust-proof phosphating film, serving as a base layer for coating, widely used in automotive parts and construction machinery.