35CrMo4 Steel Grade: A Closer Look at its Impressive Mechanical Properties and Applications

35CrMo4 is a steel grade that falls under the European standard EN 10083-3. It is a quenched and tempered steel with a high tensile strength and good toughness. This steel grade offers excellent mechanical properties, making it suitable for a wide range of applications.

The chemical composition of 35CrMo4 steel includes elements such as carbon (C), manganese (Mn), silicon (Si), phosphorus (P), sulfur (S), chromium (Cr), and molybdenum (Mo). The specific chemical composition may vary depending on the production method, but a typical composition is as follows:

– Carbon (C): 0.32-0.39%
– Manganese (Mn): 0.60-0.90%
– Silicon (Si): 0.15-0.35%
– Phosphorus (P): ≤0.025%
– Sulfur (S): ≤0.035%
– Chromium (Cr): 0.90-1.20%
– Molybdenum (Mo): 0.15-0.30%

The high carbon content in 35CrMo4 steel contributes to its good hardenability and the ability to be hardened by oil quenching. The manganese content enhances the strength and toughness of the steel, while silicon improves its machinability. Chromium and molybdenum are added to improve the hardenability and provide resistance to wear and corrosion.

In terms of mechanical properties, 35CrMo4 steel exhibits a high tensile strength of 800-1000 MPa, depending on the heat treatment and thickness. It also has a good yield strength of 550-750 MPa. The steel retains its strength even at elevated temperatures, making it suitable for applications that require high strength and resistance to creep.

Additionally, 35CrMo4 steel offers good toughness and impact resistance. It has a low notch sensitivity and can withstand shock loading and vibration. These mechanical properties make it an excellent choice for applications in the automotive, aerospace, and machinery industries. Common applications include gears, shafts, axles, crankshafts, and structural components.

In conclusion, 35CrMo4 steel grade offers impressive mechanical properties and is widely used in various industries. Its high tensile strength, good toughness, and excellent hardenability make it suitable for a range of applications that require strength, durability, and resistance to wear.
35CrMo4 Steel grade
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