AISI 1525 Carbon Steel Chemical Properties, Grade, Charts and Document

AISI 1525 is working of carbon steel, which known for his average power and high-quality machining. Along this chemical composition, carbon proportion varies from 0.22 to 0.29 or manganese is between 0.60 and 0.90; the iron is medium carbon type. The grade of steel provides us with elements that can be welded decently and formed in many applications such as gears, shafts, and motion parts. AISI 1525 is regularly normalized and put in the post-deforming cycle to give the material anticipated mechanical properties. This fact is important, because mid-range, carbon’ content provides always a combination of strength and ductility necessary for the full operation under different conditions such as pressure and temperature. Designers and producers frequently use tables, charts and documents explaining mechanical properties, heat treatment recommendations, and machinability grades to tailor the use of the alloy for particular applications.

AISI 1525 Carbon Steel Chemical Composition And Grade Table

AISI 1525 is a carbon steel with median strength and excellent weldability properties. Most often air contains of 0.22 -0.28% of carbon, 0.30-0.60% of manganese, 0.04 max of phosphorus and 0.05% max of sulfur. The alloy steel contains various elements so that it has good machinability and formability by balancing the elements. AI-1525 is commonly applied in cases when parts have a medium strength and toughness, i.e. for gears, shaft, and bolts. Its grade table shows the industrial suitability for it, making it a good reference for engineers and manufacturers to be able to choose the right materials for their specific projects.

AISI 1525 Carbon Steel Composition Table
Elements C Mn P S Fe
Min (%) 0.23 0.8 - - -
Max (%) 0.29 1.1 0.04 0.05 Balance

Advantages and Disadvantages of AISI 1525 Carbon Steel


  • Good weldability: Weldable without specific methods.

  • Moderate strength: Offers sufficient strength for various industrial uses.

  • Ductility: Good formability for shaping.

  • Cost-effective: Reasonably cheap compared to luxurious carbon steels.


  • Limited hardenability: Not ideal when hardness is critical.

  • Lower wear resistance: May deform in abrasive environments.

  • Moderate machinability: May require more effort for machining.

  • Moderate corrosion resistance: Prone to corrosion in specific contexts.

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