AISI 4320 Alloy Steel Chemical Composition Properties, Grade, Chart and Pdf

AISI 4320 alloy steel is an example of a low carbon nickel-chromium-molybdenum steel which is case-hardened with high toughness and strength characteristics. The chemical composition of ferro-alloys usually includes carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel, molybdenum and copper. They most often consist of carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel, molybdenum and sometimes copper. The grade demonstrates very good hardenability and wear resistance that allows it to withstand higher stresses and abrasion in case of gears, shafts and other components that undergo wear and tear. Its characteristics include notched fatigue strength, stone wall rigidity, and moderate machining ability once tempered into specified temperature. Often engineers, technologists, and manufacturers refer to the table, charts and PDFs that explanation the compositions, the mechanical properties, and the optical treatment recommendations for getting the highest potential performance. AISI 4320 is one example of such materials considered to be a reliable option in sectors that are heavily-powered as it enables them to run smoothly.

AISI 4320 Alloy Steel Chemical Composition And Grade Table

AISI 4320 also a low-alloy steel is highly renowned for its high strength, toughness, low wear and thereby is commonly use in gears and shafts and heavy-duty machinery components. Both its chemical composition and the elements it contains commonly include elements such as carbon, manganese, chromium, nickel, molybdenum and silicon. There is a way of grade table which is ASTM A29/A29M to ASTM A322 and AISI 4320 cover different mechanical properties that can be used in various industries. It is having a balanced composition which ensures good machinability and hardenability, thus making it very popular in the industries which require robust and reliable material for critical situations.

AISI 4320 Alloy Steel Composition Table
Elements Iron, Fe Nickel, Ni Manganese, Mn Chromium, Cr Molybdenum, Mo Carbon, C Silicon, Si Sulfur, S Phosphorous, P
Min (%) 95.855 1.65 0.45 0.4 0.2 0.17 0.15 - -
Max (%) 96.98 2 0.65 0.6 0.3 0.22 0.3 0.04 0.035

Advantages and Disadvantages of AISI 4320 Alloy Steel

    Advantages:

  • High Strength: Offers high strength after heat treatment.

  • Good Shock Resistance: Greater shock resistance due to alloying elements.

  • Wear Resistance: Resistant to wear and abrasion under suitable conditions.

  • Machinability: Fair to good machinability in annealed or normalized condition.

    Disadvantages:

  • Weldability Issues: Requires preheating and careful welding procedures.

  • Cost: More expensive than plain carbon steels.

  • Susceptible to Decarburization: Surface decarburization possible during heat treatment.

  • Corrosion Resistance: Some resistance to corrosion, but not suitable for highly acidic or chlorine-rich environments.

Related Topics

Here is another related topic that you may also like.