AISI 1025 Carbon Steel Chemical Composition, Grades, Charts and PDF Online

Low carbon steel AISI 1025 is characterized by the presence of particularities that make it suitable for use in industry. Its chemical composition usually including 0.22-0.28% carbon, 0.30-0.60% manganese, 0.04% phosphorus, and 0.05% sulfur. Moderate tensile strength accompanied with a good machinability characteristic is vital and find usage in the making of shafts, gears, studs, among other machinery components. The use of AISI 1025 steel allows for the manufacturing of parts that require higher strength than that of simple low carbon steels, but with the expense of alloying elements avoided. It is also weldable and easily shaped as a result of which it has wide usefulness in manufacturing processes. Charts, Tables and downloadable PDF showing the material's mechanical properties, heat treatment and suggested applications are easily available online. The engineers and manufacturers can use these resources to select the correct grade for their particular needs.

AISI 1025 Carbon Steel Chemical Composition And Grade Table

AISI 1025, which is a low carbon steel, is characterized mainly by a good weldability and machinability, having these qualities makes it a widely used product for many applications. Its chemical composition includes about 0.22-0.28% carbon, 0.30-0.60% manganese, 0.04% max phosphorus and 0.05% max sulfur. Typically, its hardness ranges from 89 to 183 HB which gives it moderate strength and resilience. AISI 1025 is standardized in accordance with ASTM A29, hence its availability and affordability are increased for industrial fabrication purposes. In keeping with its versatility and affordability, it can be used both as a part of large machines and as an automobile component in everyday engineering operations.

AISI 1025 Carbon Steel Composition Table
Elements Fe C Mn S P
Min (%) 99.03 0.22 0.3 0.05 0.04
Max (%) 99.48 0.28 0.6 <0.05 <0.04

Advantages and Disadvantages of AISI 1025 Carbon Steel


  • Cost-effective: Applicable for several uses and costs less.

  • Good machinability: Can be easily machined.

  • Moderate strength: Provides strength and ductility depending on grade.

  • Weldable: Can be welded with standard techniques.


  • Limited hardenability: Not suitable for high hardness applications.

  • Lower wear resistance: Wears in low to medium friction applications.

  • Susceptible to corrosion: Requires protection in corrosive environments.

  • Moderate tensile strength: Not safe for high-stress cooking.

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