AISI 1049 Carbon Steel Chemical Composition, Grades, Table and Pdf

AISI 1049 carbon steel is the medium carbon steel that is being recognized for its superb weldability and great strength. More specifically, its chemical formula usually consists of carbon, manganese, phosphorus, and sulfur, together with other essential trace elements. Grade # 1049 adheres to the American Iron and Steel Institute (AISI) standards having slight chemical variantions depending on the manufacturing process used and specific application. The applications of AISI 1049 steel widely used in making equipment and automobile parts, and also for their uses in the field of structural applications are pretty good machinability and wear resistance after heat treatment. Its composition and mechanical properties are set out very elaborate tables, chart and PDF documents that are issued by the manufacturers and standards organisations of the industry, thus allowing engineers and fabricators in making the correct material selection for their projects.

AISI 1049 Carbon Steel Chemical Composition And Grade Table

AISI 1049 carbon steel is a medium carbon steel, having a nominal carbon content of 0.49%. Its chemical composition has mainly iron component along with carbon, manganese, phosphorus, sulfur etc. accompanied with a small amount of other elements. This type of steel has good strength, toughness, and wear resistance, therefore, it is quite appropriate for many applications including machine components like gear, shafts, axles and many others of automotive technology. AISI 1049 complies with the American Iron and Steel Institute (AISI) standards. This steel's carefully engineered chemical composition and mechanics features are documented in the industry-standard tables for reference and use.

AISI 1049 Carbon Steel Composition Table
Elements Fe Mn C S P
Min (%) - 0.6 0.46 - -
Max (%) Balance 0.9 0.53 0.05 0.04

Advantages and Disadvantages of AISI 1049 Carbon Steel


  • High Hardenability: Provides excellent levels of hardenability, ideal for applications requiring high degrees of hardness and abrasion strength.

  • Improved Strength: Offers improved tensile and yield strength compared to AISI 1045 and AISI 1046.

  • Wear Resistance: Exhibits high wear resistance, reducing wear and tear in heavy-duty applications.

  • Machinability: Fairly manageable with the right cutting tools and methods.


  • Reduced Weldability: May have lower weldability compared to AISI 1045 and AISI 1046, requiring special measures and specific welding methods.

  • Moderate Corrosion Resistance: Susceptible to galvanic corrosion in certain environments if not adequately protected.

  • Limited Availability: May be more difficult to acquire than other standard carbon steels due to its particular composition.

  • Higher Cost: Slightly costlier than AISI 1045/AISI 1046 due to elevated hardenability, strength, and wear resistance features.

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