The three – to five-digit IDs represent the various steel grades that the American Iron & Steel Institute (AISI) has designated for use in different applications. Alloy steels are categorized using four-digit AISI numbers. Common alloy steel grade 4130 is utilized in a variety of applications.
The alloying elements chromium and molybdenum give AISI 4130 tubing an exceptional strength-to-weight ratio. They are also significantly stronger and harder than regular 1020 steel pipes, although they are challenging to weld. Pre- and post-weld thermal treatment is necessary to prevent cold cracking. High-pressure and high-temperature applications are the ideal uses for 4130 tubes. You may purchase 4130 tubing because of its design, which makes it useful in intricate assemblies.
Industries using 4130 Chromoly tubing are very diverse. Chromoly seamless round tubing is a versatile and highly sought-after tubing found in both aviation and race vehicles. The alloy steel grade referred to as Chromoly is 4130. Additionally, molybdenum and chromium are combined in chromolysis. This steel’s strength, hardness, and excellent corrosion resistance are among its top qualities.
Compared to carbon steel, AISI 4130 seamless tubing is more susceptible to mechanical and heat treatments. In AISI 4130 Seamless Tubes, chromium, and molybdenum are employed as reinforcing agents. It is easily soldered and has little carbon. Low alloy steel with a mix of chromium and molybdenum as reinforcing elements is known as AISI 4130. The alloy exhibits exceptional fusion weldability due to its low carbon concentration, which is nominally 0.30 percent. The alloy can be hardened and made stronger by heat treatment. In structural applications like aircraft engine mounts and welded tubing installations, 4130 low alloy steel is frequently utilized.
The metric density of 7.85 g/cm3 and the imperial density of 0.284 lb/in3 are among the physical characteristics of AISI 4130 Seamless Tubings. The melting point is 1432°C (2610°F) in metric units and 2610°F (1432°C) in imperial units. The mechanical characteristics of AISI 4130 Seamless Tubings include tensile strength, elongation, elasticity, hardness, and machinability. Additionally, it possesses special abilities for forming, welding, heat treating, forging, hot and cold working, annealing, tempering, and more.
There are numerous uses for 4130 chromoly tubing welding, including aerospace, sporting goods, motorsports, etc. The perfect balance of ductility, weight, and strength is provided by chromoly tubing. Because chrome-moly tubing is the 4130 grade, it is referred to as an HSLA (high-strength, low-alloy). Because 4130 chromoly has a low carbon content, it bends machines and welds very easily. 4130 Chromoly provides greater elongation and a greater strength-to-weight ratio. A good 4130 chromoly weld is easily identifiable since it will seem glossy and have a bluish color.
Hydraulic and Petrochemical Applications, Automotive and Bearing Industries, Mechanical and Architectural Applications, etc are prime contenders for 4130 chromoly grade. Among the industries that use energy are the pulp and paper industry, specialty chemicals, petrochemicals, pharmaceutical products, gas processing, pharmaceutical devices, heat exchangers, condensers, and chemical equipment.
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