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Steel S235JR

Known for its toughness and versatility, it's an excellent choice for your custom CNC machining projects. S235JR steel is suitable for a wide range of applications, perfect for manufacturing complex components with tight tolerances. Improve your designs by taking advantage of Weerg advanced CNC technology with S235JR steel.

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Steel s235jr CNC machining


  • Versatility
  • Excellent machinability
  • Durability


  • Limited Resistance to Corrosion
  • Reduced Weldability


  • Machining process: CNC Machining
  • Tolerances: ISO 2768-1 fine (f) or medium (m) class. Info
  • Max size: 110x110x500 mm; 4.3x4.3x19.7 in
  • Lead time: <6 days
certificate IOS 9001:2015
HP-certified 1

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4.81 / 5 from 281 reviews




S235JR steel versatility is evident in its wide range of applications, from structural frames to the most complex mechanical parts, and its suitability for different machining processes. In addition, it is well suited to several finishing treatments that improve its aesthetics and corrosion resistance.



The excellent machinability of S235JR steel allows complex geometries to be accurately manufactured to tight tolerances. Its ability to withstand rigorous machining processes without compromising structural integrity makes it an ideal choice for high-quality CNC machining projects.



S235JR steel offers outstanding durability, standing up to wear and tear over time. Its strength and resistance make it ideal for parts requiring long service life, thus efficiently contributing to the overall longevity of the final product.



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S235JR steel is a robust, cost-effective solution for a variety of industries, offering remarkable durability and versatility. Its excellent machinability makes it a go-to material for high-precision CNC machining projects, ideal for crafting intricate components with tight tolerances.



Versatility: It can be used in a wide range of applications, making it a highly adaptable material. From structural components, such as building frames and automotive parts, to intricate machine parts and decorative elements, its vast spectrum of applications is a result of its toughness and ductility.

Excellent Machinability: The excellent machinability means it can be successfully subjected to various machining processes. This includes milling, drilling and cutting, allowing for the creation of complex geometries with tight tolerances. This quality makes it a preferred material for engineers and machinists who need a material that can maintain its structural integrity under rigorous machining.

Durability: Known for its durability and wear resistance, the S235JR is able to significantly extend the life of its components. This makes it an excellent choice for parts that must withstand harsh conditions over time, contributing to the longevity of the end product.

Affordability: In comparison to other types of high-performance steel, S235JR is relatively cost-effective. This makes it a preferred choice for projects that need to balance budget constraints with performance requirements.



Limited Resistance to Corrosion: It doesn't have a high resistance to corrosion compared to stainless steels. This can limit its use in environments that are exposed to corrosive elements.

Heat Treatment: This type of steel doesn't respond well to heat treatment. This can limit its use in applications where such a process is required to enhance certain properties of the steel.

Hardness: Although it is strong and durable, it lacks the same level of hardness as other types of steel. This may make it unsuitable for applications where extreme hardness is required.

Weldability: Welding S235JR can be more complex compared to other steels due to its carbon content. This can be a challenge in applications where welding is required, adding an extra level of regard during the design and production process.


Comparison to other steels


S235JR Steel vs Stainless Steel

Stainless steel is known for its exceptional corrosion resistance, a feature that S235JR lacks. This is due to the chromium contained in the stainless steel, which forms a protective layer against corrosion when exposed to oxygen. However, stainless steel is more expensive and may not be as easy to work with as S235JR steel. Therefore, while stainless steel may be the best choice for applications exposed to corrosive environments, S235JR may be more cost-effective for projects with budget constraints and complex machining requirements.


S235JR Steel vs High Carbon Steel

High carbon steel has a higher carbon content than S235JR, which makes it harder and stronger but less ductile. This means it can hold an edge better, making it ideal for applications like cutting tools. However, high carbon steel is more difficult to weld and machine, and it lacks the corrosion resistance of stainless steel. On the other hand, S235JR, with its balance of ductility and strength, offers excellent machinability and can be a more suitable choice for applications requiring complex shapes and tight tolerances.


S235JR Steel vs Tool Steel

Tool steel is highly resistant to wear and abrasion, surpassing the performance of S235JR in these aspects. Tool steel is also hardenable, making it ideal for applications that require high hardness and durability, such as cutting tools and moulds. However, it is generally more expensive, harder to machine, and less ductile than S235JR. For applications requiring a balance between cost, machinability, and toughness, S235JR could be a more suitable option.


In conclusion, S235JR steel offers a unique combination of cost-effectiveness, machinability and versatility, making it a suitable material for a wide range of applications. However, its specific limitations compared to other steel grades must be considered, depending on the requirements of the specific application.


Best applications


Building Structure

If you are in the building and construction business, it is an outstanding choice for creating the solid structure of buildings. Its remarkable blend of strength, ductility and cost-effectiveness ensures that the steel skeleton of the building is not only strong but also cost-effective. Consequently, choosing this material for your building projects can increase your ROI while ensuring the structural stability of your buildings.


Automotive Parts

In the world of automotive manufacturing, safety and performance are paramount. For this reason, it has become a major player in the production of strong bodies and chassis. Its impressive strength-to-weight ratio optimises vehicle safety without adding unnecessary weight, promoting greater fuel efficiency and performance. Integrating this steel into automotive parts can therefore speed up the production process and improve the product market appeal.


Machinery Parts

Do you work in the industrial machinery sector? This steel could be your best partner in the manufacture of complex, high-quality mechanical parts. The superior machinability of this material allows you to precisely manufacture complex components such as gears and pulleys, ensuring that your machinery operates with maximum efficiency. By using this material for your machinery parts, you invest in durability, precision and overall operational excellence.


Urban Infrastructure

S235JR is not limited to industrial applications. Its versatility also excels in the urban infrastructure sector, where it forms the core of benches, lampposts, handrails and more. Thanks to its excellent formability and wear resistance, it stands the test of time and weather, making it durable and reliable urban furniture.


Structural components of bridges

Rely on this steel to build durable bridges that stand the test of time. Due to its formidable strength and durability, it is often chosen to form the integral load-bearing components of bridges, contributing to the longevity and safety of these crucial infrastructures.


Final considerations


In conclusion, before choosing a material, you should consider the specific requirements of the project. If you are looking for high strength, excellent toughness and low cost, S235JR steel is the best solution.

"Weerg has been an absolute game-changer for my projects! I ordered some custom S235JR steel parts, and the quality was second-to-none. The precision and craftsmanship were impressive, perfectly aligning with my specifications. The customer service was efficient and responsive, making the entire process seamless. Highly recommended for any designer in need of top-quality, CNC machined parts. Weerg and S235JR steel—a match made in design heaven! 5 stars all around!"


Tensile breaking load 340-470 MPa
Modulus of elasticity 200 GPa
Elongation at break 10 %
Density 7,8 g/cm³
Melting temperature 1500°C
Hardness 130 Brinell
Yield strength 235 MPa




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