S275Jr Carbon Steel
A Low Carbon Steel for General Engineering and Structural Applications
S275 Carbon Steel is a low carbon, high tensile strength structural steel that is commonly used in general engineering and structural applications. The name S275JR derives from the minimum yield strength of 275 MPa for this steel grade. S275Jr Carbon Steel is also known as St44-2 according to the German standard DIN 17100, and has been superseded by the European standard EN 10025-2. S275 Carbon Steel is equivalent to other international steel grades, such as ASTM A36, JIS SS400, and GB Q235B

Chemical Composition
S275 Carbon Steel has a complex chemical composition, which consists of iron, carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, copper, and vanadium. The addition of these elements enhances the corrosion resistance and mechanical properties of S275 Carbon Steel. The following table shows the chemical composition of S275 Carbon Steel, according to EN 10025-2 standard.
|
Element |
Weight % |
|
Carbon |
0.22 max |
|
Manganese |
1.50 max |
|
Phosphorus |
0.045 max |
|
Sulfur |
0.045 max |
|
Silicon |
0.40 max |
|
Nickel |
0.50 max |
|
Chromium |
0.40 - 0.65 |
|
Copper |
0.25 - 0.40 |
|
Vanadium |
0.02 - 0.10 |

Mechanical Properties
S275 Carbon Steel has outstanding mechanical properties, which make it ideal for general engineering and structural applications. The main mechanical properties of S275 Carbon Steel are yield strength, tensile strength, elongation, and hardness. The following table shows the mechanical properties of S275 Carbon Steel, according to EN 10025-2 standard.
|
Property |
Value |
|
Yield strength |
275 MPa min |
|
Tensile strength |
410 - 560 MPa |
|
Elongation |
23% min in 200 mm, 26% min in 50 mm |
|
Hardness |
140 - 190 HB |
Application Areas
S275 Carbon Steel is widely used for various applications, such as construction, engineering, machinery, and art. S275 Carbon Steel can provide low strength with good machinability and weldability, and can be fabricated into different shapes and sizes, according to the design and specification of the customers. Some examples of applications that use are:
- Construction: It can be used for making the frames, beams, columns, and floors of buildings, such as warehouses, factories, and bridges, that require low strength and high ductility. S275 Carbon Steel can also create a simple and functional look for the buildings, by forming a smooth and clean surface.
- Engineering: It can be used for making the parts and components of engineering equipment, such as cranes, forklifts, and trucks, that require low strength and high toughness. S275 Carbon Steel can also resist the stress and strain caused by the load, vibration, and impact, and maintain its shape and performance for a long time.
- Machinery: It can be used for making the tools and accessories of machinery, such as drills, saws, and hammers, that require low strength and high hardness. S275 Carbon Steel can also protect the machinery from the rust and corrosion caused by the moisture, salt, and chemicals, and extend its service life.
- Art: It can be used for making the sculptures, monuments, and fountains, that require low strength and high creativity. S275 Carbon Steel can also create a modern and minimalist art, by forming a sleek and elegant appearance.
Selling Points
S275 Carbon Steel has many advantages and benefits that make it an attractive choice for customers. Some of the selling points are:
- Low carbon and low alloy: It has a low carbon content, which means it has less impurities and better weldability and machinability. S275 Carbon Steel also has a low alloy content, which means it has less additives and better cost-effectiveness and availability.
- High tensile strength and low yield strength: It has a high tensile strength, which means it can withstand high pressure and tension without breaking or deforming. S275Jr Carbon Steel also has a low yield strength, which means it can bend and stretch easily without cracking or losing its strength.
- High ductility and toughness: It has a high ductility, which means it can be shaped and formed into different shapes and sizes, according to the customer's needs and specifications. S275 Carbon Steel also has a high toughness, which means it can absorb and resist the shock and impact, without fracturing or shattering.
- High hardness and wear resistance: It has a high hardness, which means it can resist the abrasion and erosion caused by the friction, wear, and tear, and maintain its surface and edge quality. S275 Carbon Steel also has a high wear resistance, which means it can withstand the wear and tear caused by the repeated use, and retain its functionality and durability.

Customer Concerns
Some customers may have some concerns or questions about Mild Steel S275, such as:
- How is the quality and reliability of Mild Steel S275? It meets the EN 10025-2 standard, which ensures its quality and consistency. Mild Steel S275Jr also undergoes strict quality control and testing, such as chemical analysis, mechanical testing, and hardness testing. S275Jr Carbon Steel has a long service life and can provide low strength with good machinability and weldability, for various applications.
- How is the transportation and packaging of Mild Steel S275? It can be transported by various modes, such as sea, air, or land, depending on the customer's preference and location. Mild Steel S275Jr can be packaged in various ways, such as bundles, pallets, or crates, depending on the customer's requirement and specification. Mild Steel S275Jr can be protected by plastic film, waterproof paper, or metal sheet, to prevent damage or rust during transportation and storage.
- How is the after-sales service of Mild Steel S275? It can be provided with after-sales service, such as installation guidance, technical support, and warranty. S275Jr Carbon Steel can also be replaced or refunded, if there is any defect or damage caused by the supplier or manufacturer.

Why Choose Us
If you are looking for a reliable and professional supplier of S275Jr Carbon Steel, you may want to choose us. Here are some reasons why you should choose us:
- We have more than 10 years of experience in the steel industry, and we have a team of experts and engineers who can provide you with the best solutions and advice for your project.
- We have a large inventory of S275Jr Carbon Steel, and we can offer you various grades, sizes, and shapes, according to your needs and specifications. We can also customize S275Jr Carbon Steel, by adding special coatings or treatments, such as galvanizing, annealing, or quenching.
- We have a strict quality control system, and we ensure that every batch of S275Jr Carbon Steel meets the EN 10025-2 standard and your expectations. We also provide you with quality certificates and test reports, to prove the quality and reliability of S275Jr Carbon Steel.
- We have a friendly and responsive customer service, and we can answer your inquiries and questions within 24 hours. We also provide you with after-sales service, such as installation guidance, technical support, and warranty. We also accept returns and refunds, if you are not satisfied with S275Jr Carbon Steel.
If you are interested in S275Jr Carbon Steel, please feel free to contact us. We will be happy to provide you with more information and a free quote. We look forward to hearing from you soon.
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