Demystifying 1018 Steel: Composition, Properties, and Applications

  • Updated: July 04, 2024

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Michael Yu

As a compound talent with History, Filmmaking, and Digital Manufacturing background, Michael Yu has dedicated his life to dispelling misconceptions about the manufacturing sector and transforming it into a fascinating and competent industry.
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One of the comments we received from our respected readers in the material selection is that there are just too many varieties of steel that can be utilized in industrial production, and it can be challenging to distinguish between the different steels’ advantages and disadvantages.

1018 is a great example. It is a low carbon structure steel with good mechanical and processing properties as well as pervasiveness in industrial applications, but still hard for many people to distinguish it from other materials.

This article will guide you its definition, properties, pros and cons, and uses in industriai manufacturing.

What is 1018 Steel?

XMAKE-definition of 1018 steel

At the start of this article, I’ll introduce our esteemed reader about 1018 steel’s basic attributions, physical and chemical composition and brief history. 

Brief Overview of 1018 Steel

1018 steel is a popular type of carbon alloy steel that is known for its excellent welding and forming capabilities.

It is also commonly referred to as low-carbon steel due to its relatively low carbon content compared to other types of steel.

This grade of steel is often used in a variety of applications, including machining, automotive parts, construction equipment, and more.

Physical and Chemical Composition

The composition of this steel grade plays a significant role in its overall performance in various applications.

Physical and Chemical Composition
Primary Elements Iron and Carbon
Other Elements Contained With Minor Amount
  • Carbon: 0.15-0.20%
  • Manganese: 0.60-0.90%
  • Phosphorus: 0.04%
  • Sulfur: 0.05%
  • Silicon and Copper: Sometimes used, elemental dosage depends on the situation
Density Around 7.85 g/cm³
Specific Gravity 7.9
Melting Point
Thermal Conductivity 49.8 W/mK

Brief History of 1018 Steel

Origins of 1018 steel can be traced back to the early 20th century when the American Iron and Steel Institute (AISI) designated it as a standard steel grade for industrial applications.

With the evolution of technology, the manufacturing process has become more efficient and precise.

Innovative techniques such as computer-aided design (CAD) and computer numerical control (CNC) machining have revolutionized the production of related parts.

Mechanical Properties of 1018 Steel

XMAKE-1018 steel properties

By this part, we’ll see what advantages 1018 steel offers, its weakness and limitations, and what makes it different from other alloy.

Advantages in Physical Properties

Strength and DuctilityThis type of steel is commonly used in applications where strength is required, such as in the construction of buildings, bridges, and machinery.

Weldability and Machinability: Like other carbon steel has excellent weldability, 1018 is allowed to create complex and precise shapes in welding processes without sacrificing strength, especially in constructing structures that requires greater tensile strength.

Good machinability also makes it can be easily turned, drilled, and milled with minimal difficulty and ideal for small parts and components that require precision machining.

Formability: Good formability allows it to be easily shaped into different forms without cracking or breaking, makes it a preferred choice for manufacturers who require a material that can be easily manipulated into various shapes and sizes.

What Limits the Steel 1018

Low tensile strengthIt’s tensile and yield strength is not suitable for heavy and tough loads.

This can limit its lifespan and require more frequent maintenance and upkeep to prevent deterioration, especially to wear and tear.

Low hardness: Reduce carbon content has its own negatice effect on hardness.

Compare with other steels with higher carbon content, 1018 is more prone to wear and tear in high-friction applications, results in shorter tool life and increased costs for replacement and repairs.

High operation requirements: It is not as easily machinable as some other steels, which can make it more difficult and time-consuming to work with in manufacturing processes.

High protection requirement: The corrosion resistence requires proper protection and maintenance to keep.

Without the protection, It will becomes susceptibility to corrosion, rust and deteriorate very soon.

Differences with Other Iron and Carbon Steels 

XMAKE- why is 1018 different from other steel

When comes to 1018 steel comparison with other carbon steels, there are a few key differences to take note of.

Carbon content: 1018 steel is a mild steel, which is characterized by its low carbon percentage compared to other higher carbon content steels, makes it easier to weld and form.

This lower carbon content also gives it a smoother surface finish and better manufacturing control.

Manganese: 1018 is high-manganese carbon alloy compare with other carbon steels, which can improve the hardenability of the steel and provide better strength and durability.

Heat Treatment Process: 1018 is typically annealed, which can help improve its durability and toughness.

This makes it a good choice for parts that require a combination of strength and flexibility.

Properties of 1018 Steel
What Makes It Different
  • Low-Carbon Content
  • High Manganese Content
  • Annealed in Heat Treatment Process
Advantages Limitations
  • Strength and Ductility
  • Weldability and Machinability
  • Formability
  • Low Yield Strength
  • Low Hardness
  • High Operation Requirement
  • High Protection Requirement

1018 Steel Used in Application

By this part, I’ll expain you common uses of 1018 steel in different industries and how it develops a supreme quality product.

Construction industry 

XMAKE- 1018 steel in construction

In the construction industry, 1018 is often used to create structural components like beams and columns due to its strength and durability.

Its ability to be easily welded and machined also makes it a popular choice for building frameworks and support systems. 

Automotive industry

XMAKE-1018 steel made vehicle parts

In the automotive industry, 1018 is commonly used to manufacture various vehicle parts, such as chassis components, suspension systems, and engine parts.

Its excellent strength-to-weight ratio and resistance to corrosion make it an ideal material for ensuring the safety and reliability of automobiles. 

Machinery and Equipment Manufacturing

XMAKE-1018 steel made gears

In the field of machinery and equipment manufacturing, 1018 is utilized to create a wide range of machinery parts, such as gears, shafts, and bolts.

Its higher tensile strength and machinability make it a preferred materia for producing components that require precision and reliability.

Field Properties Utilized Use Example
  • Strength and durability
  • Easily welded and machined
  • Create structural components, like beams and columns
  • Building frameworks and support systems
  • Excellent strength-to-weight ratio
  • Resistance to corrosion
  • Manufacture various vehicle parts like chassis components, suspension systems and engine parts
Machinery and Equipment
  • Strength and machinability
  • Create a wide range of machinery parts like gears, shafts, and bolts


XMAKE-1018 steel final conclusion

To sum up, 1018 steel is an alloy widely used in many different industry fields. It has significant advantages and weaknesses, and its unique composition and properties decides that it is totally different from other steels. 

Where can I get 1018 Steel Products?

You can contact with XMAKE! As leading digital manufacturing platform, our products offers a good balance of toughness and flexibility. Whether 1018 steel bar, machine parts, steel sheets or other steel products, our service will never let you down.

Frequently Asked Questions

Q1: How is 1018 and A36 Steel different from each other?

A: Both are low carbon steels, former is known for its superior machinability. The latter is more commonly used in structural applications due to its higher strength.

Q2: Can 1018 Steel be heat treated?

A: It is not typically recommended for heat treatment. However, it can be case hardened if needed for specific applications requiring increased surface hardness.

Q3: Is 1018 Steel suitable for cold drawing?

A: Yes, it is known for its excellent drawing properties. It can be easily drawn into various shapes and sizes without sacrificing its mechanical properties.

Q4: Is 1018 suitable for carburized parts?

A: Yes, it is considered one of the best steels for carburized parts due to its ability to absorb carbon and create a hard outer layer during the carburizing process.

Q5: How can stress be relieved in AISI 1018 steel?

A: Stress in AISI 1018 steel can be relieved through processes such as annealing, normalizing, or tempering to improve its machinability and mechanical properties.

Q6: What makes AISI 1018 hot rolled steel a popular choice?

A: AISI 1018 hot rolled steel is preferred for its excellent machinability and affordability, makes it a versatile option for a wide range of applications in various industries.


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