37SiMn2MoV alloy structural steel

37SiMn2MoV alloy structural steel

37SiMn2MoV alloy structural steel has been successfully applied in steel structures in China over the past years. The steel with a tensile strength of ∽980MPa is used for shafts, axles, standard studs and other important parts for a variety of applications. One of its features is that it requires no pre-heating before welding due to its low hardenability. It also has a good yield strength and is easy to form and weld.

37SiMn2MoV alloy structural steel is an alloy of a ferrous metal containing manganese and silicon as the main alloying elements, with a small amount of molybdenum and vanadium added to increase strength and hardness. As a result of its composition, it has a good balance of strength, ductility, and toughness. Due to its low hardenability, weld repairs do not require preheating, and the welded joints of this steel is characterized by a good fusion and an excellent mechanical property.

The corrosion resistance of 37SiMn2MoV alloy structural steel is superior to that of ordinary carbon structural steel due to its alloying elements, and with proper surface treatment, it is also able to resist mild corrosive agents. The high strength allows for lighter components when designing and manufacturing structures, which leads to significant savings in material costs and improved economic efficiency.

37SiMn2MoV alloy structural steel has become a popular choice for construction projects due to its wide range of uses and numerous advantages. It has excellent properties such as good weldability and heat resistance, superior corrosion resistance, low hardenability, good toughness, superior fatigue strength, and good balance of strength and ductility. It is a cost-effective and reliable material for a wide range of structural applications.

In terms of the welding process, it does not require preheating because of its low hardenability, allowing for easier and speedier welding. The joint produced from this steel is characterized by a .good fusion, ensuring the properties of the welded joint conform to the properties of the parent material.

37SiMn2MoV alloy structural steel is an optimum choice for a variety of structural applications due to its excellent corrosion and fatigue resistance, low hardenability, good weldability and good mechanical properties that ensure reliable and cost-effective performance. This steel combines the advantages of cast iron, stainless steel and other alloys in one, and it is applicable for medium- and small-sized machine production, manufacture of bridges, and other general industrial constructions.

37SiMn2MoV alloy structural steel is a new type of low-alloy vane and bearing steel developed in China. It has excellent comprehensive mechanical properties, high fatigue strength, good impact toughness and low notch sensitivity, good tempering stability and low notch brittleness. In terms of chemical composition, C: 0.34-0.39, Si: 1.30-1.70, Mn: 1.50-2.00, Mo: 0.25-0.40, V: 0.20-0.30.

37SiMn2MoV alloy structural steel is widely used for special parts with high requirements for strength, fatigue strength, and wear resistance. It is mainly used to manufacture large and medium-sized gears, bearing rings, camshafts, levers and other parts, as well as sleeve shafts, connecting rod heads and sliders.

The heat treatment of 37SiMn2MoV alloy structural steel is critical to obtain the required mechanical properties. The general heat treatment process is normalizing + quenching + tempering. After the heat treatment, the mechanical properties are as follows: the tensile strength is 650-760MPa, the yield strength is 610-720MPa, the elongation is 15-20%, the impact energy is 40-60J, and the HRC is 61-64.

The forging temperature of 37SiMn2MoV alloy structural steel is 1160-1180℃. The forging temperature has a great influence on the microstructure and mechanical properties of forgings. If the forging temperature is low, the microstructure will be uneven and the properties will be low. If the temperature is too high, the segregation will be serious and the tempering stability will be poor. In order to achieve satisfactory properties, it is necessary to strictly control the temperature during forging.