DIN 17155 13CrMo44 Mild Carbon Steel Sheet

13CrMo44 steel plate is a widely used alloy steel known for its specific mechanical and physical properties. This type of steel is often chosen for applications in various industries, especially in the manufacturing of boilers, pressure vessels, and other components that require high strength and resistance to high temperatures and pressure.

Chemical Composition:
The chemical composition of 13CrMo44 steel plate is a crucial factor influencing its properties. It typically contains carbon (C) in the range of 0.08% to 0.18%. Silicon (Si) is present in an amount ranging from 0.10% to 0.35%, which helps improve the steel's fluidity during casting and enhances its oxidation resistance. Manganese (Mn), with a content of 0.40% to 1.0%, contributes to the hardenability and strength of the steel. Phosphorus (P) is limited to no more than 0.035% to avoid brittleness and reduce the ductility of the steel. Sulfur (S) is also restricted to no more than 0.03% to prevent hot shortness and improve the weldability. Chromium (Cr) is an important alloying element, present at around 0.70% to 1.10%, which significantly enhances the steel's hardness, wear resistance, and corrosion resistance. Molybdenum (Mo), typically at 0.40% to 0.60%, improves the high-temperature strength and creep resistance of the steel.

Mechanical Properties:
The mechanical properties of 13CrMo44 steel plate are of great significance for its application. The tensile strength usually ranges from 440 to 590 MPa, indicating its ability to withstand pulling forces without fracture. The yield strength is approximately 295 MPa, representing the stress at which the steel begins to deform plastically. The elongation after fracture is around 22%, reflecting the ductility of the material. The hardness of 13CrMo44 steel plate can vary depending on the heat treatment process, but it is generally in the range of 170 to 220 HB.

High-Temperature Properties:
One of the notable features of 13CrMo44 steel plate is its excellent performance at high temperatures. It can maintain its strength and stability at elevated temperatures, making it suitable for applications in boilers and pressure vessels that operate under such conditions. The creep resistance, which is the ability to resist gradual deformation over time at high temperatures, is an important property. Additionally, the oxidation resistance helps prevent the steel from deteriorating when exposed to high-temperature oxidizing environments.

Weldability:
The weldability of 13CrMo44 steel plate is an important consideration in fabrication processes. With proper welding techniques and filler materials, it can be successfully welded to form complex structures. However, precautions need to be taken to ensure that the heat input during welding does not adversely affect the properties of the base material and the weld zone.

Corrosion Resistance:
Although not highly corrosion-resistant like some stainless steels, 13CrMo44 steel plate offers a certain degree of resistance to corrosion in typical industrial environments. However, in more corrosive conditions, additional protective coatings or surface treatments may be required to enhance its corrosion resistance.

Impact Resistance:
The impact resistance of 13CrMo44 steel plate is an important parameter, especially in applications where the material may be subjected to sudden loads or impacts. It has a certain ability to absorb energy and resist fracture under impact conditions.

Fatigue Resistance:
In components that are subjected to cyclic loading, the fatigue resistance of 13CrMo44 steel plate is crucial. It can withstand repeated stress cycles without premature failure, ensuring the longevity and reliability of the structure.

Thermal Conductivity and Expansion:
The thermal conductivity of 13CrMo44 steel plate affects its heat transfer capabilities, while its coefficient of thermal expansion influences the dimensional stability when exposed to temperature changes.

In conclusion, the performance parameters of 13CrMo44 steel plate make it a valuable material in numerous industrial applications. Understanding these parameters is essential for engineers and designers to select the appropriate material and design components that can meet the specific requirements of different projects. The combination of its mechanical strength, high-temperature performance, and other properties enables 13CrMo44 steel plate to play a significant role in various industries, contributing to the safety and reliability of equipment and structures.

Please note that the specific values of these performance parameters may vary depending on the manufacturing process, heat treatment, and other factors. It is always recommended to refer to the material specifications provided by the manufacturer or relevant standards for accurate and detailed information.

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