Understanding the Properties and Applications of 13CrMo4-4 Steel Grade

13CrMo4-4 is a low-alloy steel grade commonly used in high-temperature applications. It is typically used in pressure vessels and boilers, as well as in piping systems that carry high-pressure fluids.

Mechanical Properties of 13CrMo4-4:
– Tensile Strength: The tensile strength of this steel grade is typically in the range of 440-590 MPa, depending on the heat treatment and thickness.
– Yield Strength: The yield strength of 13CrMo4-4 is typically in the range of 290-355 MPa.
– Elongation: The elongation at break for this steel grade is typically 22-25%.
– Impact Toughness: The impact toughness of 13CrMo4-4 is good, especially in the normalized condition.

Chemical Composition of 13CrMo4-4:
– Carbon (C): The carbon content in 13CrMo4-4 is typically low, around 0.08-0.15%.
– Silicon (Si): The silicon content is typically around 0.50%.
– Manganese (Mn): The manganese content is typically around 0.40-0.80%.
– Phosphorus (P): The phosphorus content is limited to a maximum of 0.025%.
– Sulfur (S): The sulfur content is limited to a maximum of 0.015%.
– Chromium (Cr): The chromium content is the main alloying element in this grade, typically in the range of 0.70-1.15%.
– Molybdenum (Mo): The molybdenum content is also significant, typically around 0.45-0.60%.
– Other Elements: Trace amounts of other elements such as copper (Cu) and nickel (Ni) may be present.

Applications of 13CrMo4-4:
– Power Generation: 13CrMo4-4 steel grade is commonly used in power plants for the production of steam boilers and pressure vessels.
– Oil and Gas Industry: It is also used in the oil and gas industry for high-temperature applications, such as refineries and petrochemical plants.
– Chemical Processing: The excellent high-temperature resistance of 13CrMo4-4 makes it suitable for various chemical processing equipment.
– Heat Exchangers: This steel grade is often used in heat exchangers where elevated temperatures and high-pressure fluids are involved.
– Pipelines: 13CrMo4-4 can be found in pipelines that transport high-pressure fluids, such as steam, gas, or crude oil.

Overall, 13CrMo4-4 is a versatile steel grade with good mechanical properties and excellent resistance to corrosion and high-temperature environments, making it suitable for a range of applications in various industries.
13CrMo4 4 Steel grade
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