How about 35CrMoA

35CrMoA contains alloy elements such as chromium (Cr) and molybdenum (Mo), which gives it high static strength, impact toughness and high fatigue limit. Its hardenability is higher than 40Cr steel, which means it can better withstand creep strength and durability at high temperatures. 35CrMoA can work at high temperatures, and the long-term operating temperature can reach 500°C. However, this steel has medium plasticity during cold deformation and poor weldability.35CrMoA is usually used to manufacture key structural components that work under high loads, such as transmission components for vehicles and engines, rotors and main shafts of turbine generators, heavy-load transmission shafts, large-section parts and fasteners, etc.

35CrMoA bolt is a high-strength bolt, usually used for important connections and structural applications. This bolt can be divided into ordinary bolts and higher-strength bolts according to its different strength levels. Common strength levels include 3.6 and 4.6. , Grade 4.8, Grade 5.6, Grade 6.8, Grade 8.8, Grade 9.8, Grade 10.9 and Grade 12.9. Bolts of Grade 8.8 and above are usually heat treated (such as quenching and tempering), so they have higher strength and durability. Because of its high strength and good wear resistance, 35CrMoA bolts are often used in key connections that need to withstand greater forces.

35CrMo alloy structural steel has high static strength, impact toughness and high fatigue limit. It has higher hardenability than 40Cr. It has high creep strength and durable strength at high temperatures. The long-term working temperature can reach 500℃; cold It has medium plasticity during deformation and poor weldability. Low temperature to -110 degrees Celsius, and has high static strength, impact toughness, high fatigue strength, good hardenability, no overheating tendency, small quenching deformation, acceptable plasticity during cold deformation, medium machinability, but has The first type has temper brittleness and poor weldability. It needs to be preheated to 150~400 degrees Celsius before welding. Post-weld heat treatment is used to eliminate stress. It is generally used after quenching and tempering. It can also be quenched or quenched at high and medium frequency and low, Temper over medium heat before use. Wugang production execution standards: GB/T11251-2009, Wugang enterprise standards, military industry standards, delivery status: normalizing or normalizing + tempering, quenching and tempering.

The main features of 35CrMo steel are: high tensile strength and creep strength at high temperatures, good impact toughness at low temperatures, and the working temperature can reach 500 degrees Celsius at high temperatures and -110 degrees Celsius at low temperatures. It has high static strength, impact toughness, high fatigue strength and hardenability, no overheating tendency, small quenching deformation, acceptable plasticity during cold deformation, moderate cutting ability, but has the first type of temper brittleness, welding Poor sex. It needs to be preheated to 150-400 degrees Celsius before welding, and post-weld heat treatment is required to eliminate stress. Generally used after quenching and tempering, it can also be used after high and medium frequency surface quenching or quenching, as well as low and medium temperature tempering.

Used to manufacture important parts that withstand impact, bending and high loads in various machinery, such as herringbone gear crankshafts, hammer rods, connecting rods, fasteners, turbine spindles and axles, engine transmission parts, large electric motors, and petroleum machinery in steel plants High-pressure seamless thick-walled pipes in industrial machinery (temperature 450-500°C, non-corrosive media) are also used in shafts, stone drills, boiler bolts with operating temperatures below 400°C, nuts with temperatures below 510°C. It can replace 40CrNi and be used to manufacture high-load transmission shafts, turbine engine rotors, large-section gears, support shafts (diameter less than 500MM), etc.

35CrMo is an alloy structural steel mainly used to manufacture important parts in various machines that can withstand impact, bending and torsion, and high loads. When welding this kind of steel, you can choose the following welding materials: Gas shielded welding wire: This is a shielded gas welding material, suitable for welding of high-strength structural steel, and can provide stable welding quality and good appearance. Gas-shielded welding wire provides sufficient protection during the welding process to avoid adverse reactions such as oxidation and nitridation and ensure welding quality. Argon arc welding wire: also called TIG welding wire, it is a melting electrode protective welding material. Argon arc welding wire is suitable for welding various high-strength steels, especially parts with high surface quality and air tightness requirements, such as aerospace parts, precision machinery, chemical equipment, etc. Submerged arc welding wire: suitable for welding high-strength structural steel, especially for plate welding with high flatness and specification requirements. Submerged arc welding wire is suitable for welding thick plates and large-sized structural parts, and is widely used in aerospace, marine engineering, petrochemical and other industries.

The main differences between 35CrMo and 42CrMo are chemical composition, mechanical properties and uses. Here are the details: Chemical composition. The carbon content of 35CrMo and 42CrMo is around 0.35% and 0.42% respectively. The chromium content of 42CrMo is slightly higher than that of 35CrMo. Mechanical behavior. The strength and hardenability of 42CrMo are generally higher than that of 35CrMo, and its tensile strength, yield strength and impact toughness values are also correspondingly higher. Usage: 42CrMo is usually used to make parts with higher strength and hardness requirements, while 35CrMo is mostly used to make parts with less hardness and performance requirements.