Alloy structural steel 40CrNi

Alloy structure steel 40CrNi

Alloy structural steels refer to a class of structural steels that are alloyed with other elements to provide improved mechanical properties, increased strength, and greater hardness than conventional structural steels. 40CrNi is a type of alloy structural steel that belongs to this category.

40CrNi is a low-carbon alloy steel with a high strength–to–weight ratio that is ideal for use in automotive, aerospace and construction applications. Its metallurgical properties are similar to those of 42CrMo, which is an alloy steel that is extensively used in the automotive and automotive parts industry. 40CrNi is composed mainly of iron, 0.27–0.37% carbon and 0.60–0.90% chromium, along with small amounts of other elements such as manganese, copper and molybdenum.

The mechanical properties of 40CrNi alloy structural steel include a tensile strength of >800 MPa, yield strength of 600–700 MPa, and an elongation of >14%. The hardness of 40CrNi increases with the increase of tempering temperature, and its impact value at room temperature is usually >50 J/cm2. The properties of alloy structural steels depend largely on the heat treatments employed, and as such, heating, quenching and tempering can be used to manipulate the properties of hot rolled 40CrNi.

40CrNi proves to be a great choice for automotive and automotive parts manufacturing due to its strength, low cost and ease of use. It is easy to cut, form, and weld while also providing superior corrosion resistance, wear resistance, and fatigue resistance. This makes it an excellent choice for applications that require a strong, low-cost metal that can withstand extreme temperatures and harsh conditions.

Overall, 40CrNi is an excellent choice for a range of manufacturing applications due to its superior metallurgical properties, excellent strength-to-weight ratio, and relatively low cost. The low carbon content of the steel offers excellent corrosion resistance and is suitable for a range of applications, making it a viable option for automotive and automotive part manufacturing. This makes it a great choice for anyone looking for a cost effective and high performance alloy structural steel.

40CrNi is a kind of medium carbon low alloy structural steel, good overall performance, hardenability, good wear resistance, more for medium strength general parts.

40CrNi alloy structural steel is tempered at 500_710℃, and the hardness is 18_34HRc. It has a certain resistance to high temperature and corrosion. The tensile strength of the steel is 712MP, the yield limit is 785MPa, and the elongation after fracture is 16%.

In the heat treatment of 40CrNi alloy structural steel, the austenitization temperature is 980~1020℃, and the hardness of the quenched and tempered 40CrNi alloy structural steel is 18_22HRc. The steel has good machinability, welding performance is good, but preheat welding or post weld heat treatment is required when welding.

40CrNi alloy structural steel is mainly used to manufacture important parts with medium strength and small deformation. Typical applications include flames and pressure vessels, and all kinds of important machine parts. It is also used to make high load drive shafts and fasteners. The steel also has good fatigue strength, impact toughness and good low temperature plasticity and moldability.

40CrNi alloy structural steel is widely used in the production of important parts with medium strength and small deformation, bearings, high temperature and corrosion resistant components, components and parts with quenching and tempering, etc. The machining performance is good, the forming performance is good, the welding performance is good, but preheating and post welding heat treatment are required when welding.