Introduction
36CrNiMo8 is a ferroalloy of chromium, nickel and molybdenum. It is used in the production of components and tools which require tremendous strength, toughness, and wear resistance in service. Alloy steel 36CrNiMo8, 1.6582 - description and application. Alloyed steel, usually supplied in quenched and tempered condition. Its properties are constant at low temperatures.
Chemical Composition and Properties
36CrNiMo8 is composed of carbon, chromium, nickel, molybdenum, manganese, silicon and phosphorus. Its tensile strength ranges from 520 MPa to 835MPa, while its yield strength ranges from 425 MPa to 690 MPa. Equipped with excellent machinability and wear resistance, this type of steel offers excellent formability and weldability with exceptional corrosion resistance.
Applications
36CrNiMo8 is widely used in the automotive, aerospace, and energy industries. Its excellent toughness, wear and abrasion resistance make it the ideal material for components and tools subjected to heavy wear and tear. This steel is also very common in crankshafts, pressure vessels, gears, and various metalworking tools. Owing to its high strength and wear resistance, 36CrNiMo8 is also used in many industries that require metal parts with high strength and no failure in service.
Heat Treatment
36CrNiMo8’s critical hardness can be altered by changing the heating and cooling sequences and time schedules to achieve specific values of hardness, strength, and ductility. Together, these treatments cause the steel to respond to a specific heat treatment. For example, by heating the steel to around 870 to 900 ⁰C, quenching in oil or water, and tempering at around 620–700 °C, it can be used for general engineering applications. On the other hand, when hardened at slightly lower temperatures of around 800 to 850 ⁰C, quenched in oil or water and then tempered to around 500 °C, it will reach greater hardness and strength.
Welding
This steel can be welded using conventional welding processes. When welding 36CrNiMo8, it’s important to use a higher preheating temperature to reduce weld cracking. The weld should be allowed to cool down at a normal rate to prevent the formation of cracks. If a weld is stressed, its hardness can be lowered. To minimize this problem, it’s necessary to minimize the stress applied to the weld.
Conclusion
In conclusion, 36CrNiMo8 is a ferroalloy alloy steel with excellent strength, toughness, and wear resistance. It is used in many industries that require strong metal parts. It can be treated to heat with different temperatures and times to achieve specific values of hardness, strength, and ductility. It can also be welded, but the welding stress should be minimized to reduce hardness.
