Demystifying the Applications of 905M39 Steel Grade in Engineering

The 905M39 steel grade is a low alloy steel commonly used in engineering applications. Its mechanical properties make it suitable for various purposes. With a tensile strength of 850-1050 MPa, it offers excellent strength and toughness. The yield strength is typically around 700 MPa. The hardness of this steel grade ranges from 248 to 302 HB.

In terms of technical properties, the 905M39 steel grade has good machinability, which means it can be easily shaped and formed. It can also be welded using conventional methods. However, preheating is recommended to prevent cracks during welding.

The chemical composition of the 905M39 steel grade includes elements such as carbon, manganese, silicon, chromium, molybdenum, and nickel. The carbon content is maintained at around 0.36-0.44%. Manganese content is typically set between 0.70 and 1.00%. Silicon is present in a range of 0.10-0.40%, while 0.40-0.70% of chromium is added to enhance the steel’s hardenability. Molybdenum content varies from 0.15 to 0.25%, and nickel is added in small amounts (around 0.40%).

The applications of 905M39 steel grade in engineering are diverse. It is commonly used in the construction of heavy-duty components such as gears, shafts, crankshafts, and spindles. This steel grade is also suitable for applications that require high tensile strength and resistance to wear and tear, such as axles and fasteners. Its excellent mechanical properties and robustness make it a popular choice in various industries, including automotive, aerospace, and machinery manufacturing.