Unveiling the Heat Treatment and Machinability of 36CrNiMo4 Steel

[ad_1] The chemical composition of 36CrNiMo4 steel typically includes 0.32-0.40% carbon, 0.40-0.70% silicon, 0.60-0.90% manganese, 0.90-1.20% chromium, 0.15-0.30% molybdenum, and 1.30-1.70% nickel. Trace amounts of phosphorus and sulfur may also be present.

In terms of mechanical properties, 36CrNiMo4 steel exhibits a tensile strength of 1000-1200 MPa, a yield strength of 850-1000 MPa, and an elongation of 11-13%. Its hardness typically ranges from 250 to 330 HB.

Heat treatment of 36CrNiMo4 steel involves processes such as quenching and tempering to achieve the desired combination of hardness and strength. Machinability is generally good for this steel, especially when it is in the annealed or normalized condition. However, it may become more difficult to machine after heat treatment due to increased hardness.