38CrMoAl

38CrMoAl is a kind of steel, and it has high nitriding performance and mechanical properties, good heat resistance and corrosion resistance. After nitriding treatment, 38CrMoAl can obtain high surface hardness, high fatigue strength and good resistance to overheating, and no temper brittleness. The machinability is acceptable, the high temperature working temperature can reach 500°, but the shape is lower when cold rolling, the weld ability is poor, the hardenability is low, and 38CrMoAl steel is generally used after quenching and tempering.

38CrMoAl Chemical Composition

C: 0.35~0.42
Si: 0.20~0.45
Mn: 0.30~0.60
S: Allowable residual content≤0.035
P: Allowable residual content≤0.035
Cr: 1.35~1.65
Ni: Allowable residual content≤0.030
Cu: Allowable residual content≤0.030
Mo: 0.15~0.25

38CrMoAl Steel Mechanical Property

Tensile strength σb (MPa): ≥ 980 (100)
Yield strength σs (MPa): ≥ 835 (85)
Elongation δ5 (%): ≥14
Area shrinkage ψ (%): ≥ 50
Impact work Akv (J): ≥71
Impact toughness value αkv (J/cm2): ≥88(9)

38CrMoAl round steel is mostly used to manufacture high-fatigue strength, high wear resistance, small size and high strength after heat treatment, such as cylinder liner, seat cover, bottom cover, piston bolt, inspection precision grinding machine, spindle, lathe spindle, mast, precision screw, gear, worm, high pressure valve, valve stem, imitation mold, roller, model, steam turbine governor, rotating sleeve, fixed sleeve, plastic extrusion machine Parts, etc.