ThePipingMart Blog Metals A1011 Steel vs 1018 – What’s the Difference

A1011 Steel vs 1018 – What’s the Difference

A1011 Steel vs 1018

Steel is a versatile and popular material used in various industries worldwide. Selecting the right one for your project can be challenging with a wide range of steel types and grades. Two common types of steel are A1011 and 1018, and understanding their differences is essential to choose the right one for your application. This blog post will give you a comprehensive guide to help you understand the differences between A1011 steel and 1018 steel.

Difference Between A1011 Steel and 1018

Chemical Composition

Chemical composition plays an essential role in determining the properties of steel. A1011 steel is a hot-rolled carbon steel that contains 0.08% to 0.13% carbon, while 1018 steel contains 0.18% to 0.23% carbon. The higher carbon content in 1018 steel makes it harder and more durable than A1011 steel. Additionally, 1018 steel contains small amounts of other alloying elements, such as manganese, phosphorus, and sulfur, contributing to its strength and machinability.

Mechanical Properties

Mechanical properties, including yield strength, tensile strength, and elongation, are crucial factors that determine a steel’s performance in various applications. A1011 steel has a lower yield strength of 28 ksi and a lower tensile strength of 45 ksi, which makes it suitable for less demanding applications. On the other hand, 1018 steel has a higher yield strength of 53 ksi and a tensile strength of 63 ksi, which makes it ideal for heavy-duty applications that require high strength.

Surface Finish

Surface finish is another essential factor when selecting steel for a project. A1011 steel has a rougher surface and is usually used in unexposed parts or where aesthetics are not a significant concern. In contrast, 1018 steel has a smooth surface, making it more aesthetically pleasing and suitable for furniture, decorative items, and fixtures.


The cost of steel is a crucial consideration in any project. A1011 steel is generally less expensive than 1018 steel, making it a popular choice for cost-conscious projects. However, 1018 steel’s higher cost is justified by its superior strength, durability, and versatility.


A1011 and 1018 steel are widely used in various industries, including automotive, construction, manufacturing, and machinery. A1011 steel is commonly used for general-purpose applications, such as brackets, hangers, and sheet metal components. In contrast, 1018 steel is ideal for demanding applications, such as gears, shafts, and machine parts, where strength and precision are essential.

  • A1011 steel is a hot-rolled steel specifically designed for use in the construction industry.
  • 1018 steel is a cold rolled steel designed explicitly for use in the construction industry.
  • A1011 steel is typically used for projects requiring higher strength and durability, such as bridges or buildings.
  • 1018 steel is typically used for projects requiring lower strength and durability, such as fences or gates.
  • A1011 steel is more expensive than 1018 steel due to its higher strength and durability.


Understanding the differences between A1011 and 1018 steel is crucial in selecting the right steel type for your application. Chemical composition, mechanical properties, surface finish, price, and applications should be considered. With this comprehensive guide, you should now be equipped with the knowledge to choose your next project. Consult a steel expert to ensure you get the best steel for your needs.

Related Post