An Overview of the Chemical Composition and Mechanical Properties of 40NiCrMo22 Steel Grade

[ad_1] 40NiCrMo22 is a low alloy steel known for its high strength, good toughness, and excellent hardenability. It is primarily used in the automotive and aerospace industries for the production of highly stressed components such as gears, shafts, and connecting rods.

Chemical Composition:
– Carbon (C): 0.37-0.45%
– Silicon (Si): 0.40% max
– Manganese (Mn): 0.50-0.80%
– Phosphorus (P): 0.025% max
– Sulfur (S): 0.035% max
– Chromium (Cr): 0.90-1.20%
– Nickel (Ni): 1.50-1.80%
– Molybdenum (Mo): 0.15-0.30%

Mechanical Properties:
– Tensile Strength: 1020-1220 MPa
– Yield Strength: 865-980 MPa
– Elongation: 11-13%
– Hardness: 31-36 HRC
– Impact Energy: 20-40 J

These properties make 40NiCrMo22 an ideal steel grade for applications requiring high mechanical strength and good impact resistance. Its excellent hardenability also makes it suitable for quenching and tempering processes to achieve the desired mechanical properties. Due to its high nickel and chromium content, 40NiCrMo22 exhibits good toughness and resistance to corrosion and wear. Overall, it is a versatile steel grade that can be used in a variety of demanding applications.