Mechanical properties of 35CrMo alloy structural steel

35CrMo alloy structural steel has high static strength, impact toughness and high fatigue limit. The hardenability of 35CrMo steel is higher than that of 40Cr, and it has high creep strength and endurance strength at high temperature, and the long-term working temperature can reach 500℃; it has medium plasticity during cold deformation and poor weldability. Low temperature to -110 degrees Celsius, high static strength, impact toughness and high fatigue strength, good hardenability, no overheating tendency, small quenching deformation, acceptable plasticity during cold deformation, medium machinability, but there is The first type is 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 on high and medium frequency surfaces and low, Use after tempering at medium temperature.
 
Mechanical properties of 35CrMo alloy structural steel
Tensile strength σb (MPa): ≥985(100)
Yield strength σs (MPa): ≥835(85)
Elongation δ5 (%): ≥12
Reduction of area ψ (%): ≥45
Impact energy Akv (J): ≥63
Impact toughness value αkv: ≥78(8)
Hardness: ≤229HB
 

Manufacturing use of 35CrMo alloy structural steel

35CrMo alloy steel is used to manufacture important parts in various machines that bear impact, bending and torsion, and high loads, such as rolling mill herringbone gears, crankshafts, hammer rods, connecting rods, fasteners, steam turbine engine main shafts, axles, and engines Transmission parts, large motor shafts, perforators in petroleum machinery, bolts for boilers with operating temperatures below 400℃, nuts below 510 degrees Celsius, high-pressure seamless thick-walled conduits in chemical machinery (temperature 450 to 500 degrees Celsius, no Corrosive media), etc.; it can also replace 40CrNi in the manufacture of high-load drive shafts, steam turbine engine rotors, large section gears, support shafts (less than 500MM in diameter), etc.; process equipment materials, pipes, welding materials, etc.
35CrMo alloy steel is mainly used as important structural parts that work under high loads, such as transmission parts of vehicles and engines; rotors, main shafts, heavy-load transmission shafts of steam turbine generators, and large-section parts.
 

Pre: Q690D steel plate for excavators

Next: A573Gr.70 chemical composition