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Unraveling the Engineering Marvel: The Remarkable Properties of 21NiCrMo2 Steel Grade
Specification:
21NiCrMo2 is a steel grade that belongs to the alloy steel family. It is known for its exceptional mechanical properties and impressive chemical composition. This steel grade is extensively used in various industries due to its high strength, excellent wear resistance, and good toughness.
Mechanical Properties:
– Tensile Strength: The 21NiCrMo2 steel grade exhibits a high tensile strength of approximately 1000-1200 MPa, making it suitable for applications that require strong and durable materials.
– Yield Strength: The yield strength of 21NiCrMo2 is about 900-1000 MPa. This property ensures that the material can withstand significant loads without permanent deformation.
– Elongation: The steel grade has a remarkable elongation capacity of 10-15%. This property allows for easier forming and shaping of the material without compromising its strength.
– Impact Strength: The impact strength of 21NiCrMo2 is excellent, providing resistance to sudden shocks and vibrations. It can absorb substantial energy without fracturing, making it a preferred choice for applications exposed to dynamic loading conditions.
Chemical Composition:
– Carbon (C): Carbon content in 21NiCrMo2 steel is typically around 0.18-0.23%. Carbon enhances the steel’s strength and hardness, making it suitable for demanding applications.
– Silicon (Si): Silicon is added in small quantities (0.15-0.35%) to improve the steel’s ability to resist oxidation and corrosion, as well as to enhance its strength.
– Manganese (Mn): Manganese content in 21NiCrMo2 steel is approximately 0.60-0.90%. Manganese enhances the material’s hardenability, strength, and wear resistance.
– Nickel (Ni): 21NiCrMo2 contains a significant amount of nickel (1.50-1.80%), which improves the steel’s toughness, high-temperature strength, and resistance to corrosion.
– Chromium (Cr): Chromium forms a protective oxide layer on the surface of 21NiCrMo2 steel, increasing its corrosion resistance and contributing to its excellent wear resistance. The chromium content is usually about 0.80-1.10%.
– Molybdenum (Mo): This alloying element is present in 21NiCrMo2 steel in a range of 0.20-0.30%. Molybdenum increases the material’s hardenability, strength, and high-temperature resistance.
Overall, the 21NiCrMo2 steel grade is a remarkable engineering material with a unique combination of mechanical properties and an impressive chemical composition. Its strength, toughness, wear resistance, and corrosion resistance make it an excellent choice for various applications requiring high-performance materials.
21NiCrMo2 Steel grade
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