Steel sheets or low-carbon steel sheets are one of the most used products in industries. These consist of high ductility, very good weldability, and ease to be machining. These sheets have high utility and can be easily used in construction, automotive, and other fabrication services.
Carbon steel has been one of the most used materials in industrialisation for many years. Different industries such as shipbuilding, automotive and construction industries have widely used steel sheet because of its favourable physical and mechanical properties.
Composition and Properties
| Chemical composition | Mechanical properties |
|---|---|
|
Steel sheet usually contains up to 0. 25% carbon and small quantities of manganese, silicon and other materials. This composition results in its well-known properties:
|
The mechanical qualities of steel sheets are well-regarded:
|
Types and Grades of Steel Sheets
Hot Rolled vs cold rolled steel sheets
Hot-rolled and cold-rolled steel sheets serve different purposes:
- Hot rolled sheets: Coated and produced at high temperatures, they are relatively cheaper and suitable for structural components.
- Cold rolled sheets: Rolled at room temperature they provide a smooth surface finish as well as improved precision, making them ideal for applications requiring precise tolerances.
Various Grades and Specific Uses in Industry
Different grades of steel sheets cater to specific needs:
- S355JR: S355JR is widely used in areas related to engineering structures. Its excellent weldability and impact resistance make it highly suited for building construction and bridges. Moreover, S355JR is frequently utilised in the production of large machinery and equipment because of its strong mechanical qualities and high strength.
- S355J2: S355J2 has better impact resistance. It is a good option for structures and specific uses that are exposed to different weather conditions outside the house, especially in colder regions It is frequently employed in the building of wind towers, offshore platforms, and other buildings exposed to severe weather. A higher level of toughness in S355J2 further makes it capable of withstanding regular usage, and dynamic load stresses.
| Grade | Chemical Composition | Mechanical Properties | Applications |
|---|---|---|---|
| S355JR | Carbon (max): 0.24% Manganese: 1.60%Silicon: 0.55%Phosphorus (max): 0.045%Sulphur (max): 0.045% |
Yield Strength: 355 MPa Tensile Strength: 470-630 MPa |
Engineers count on S355JR for building bridges and strong machines. It welds smoothly and holds up against impact, making it perfect for huge projects where toughness is key. |
| S355J0 | Carbon (max): 0.20% Manganese: 1.60%Silicon: 0.55%Phosphorus (max): 0.040%Sulphur (max): 0.040% |
Yield Strength: 355 MPa Tensile Strength: 470-630 MPa |
Builders pick S355J0 when they need steel that faces cold weather well. It works well for structures like buildings and other things that need extra toughness in chillier temperatures. |
| S355J2 | Carbon (max): 0.20% Manganese: 1.60%Silicon: 0.55%Phosphorus (max): 0.040%Sulphur (max): 0.040% |
Yield Strength: 355 MPa Tensile Strength: 470-630 MPa |
S355J2 shines in extreme weather. People use it in wind towers, offshore platforms, and other places where storms hit hard. Its special strength against the cold makes it great for busy, moving parts that face tough conditions. |
| S355K2 | Carbon (max): 0.20% Manganese: 1.60%Silicon: 0.55%Phosphorus (max): 0.040%Sulphur (max): 0.040% |
Yield Strength: 355 MPa Tensile Strength: 470-630 MPa |
S355K2 excels in the harshest weather. It tackles cold temperatures easily and helps build offshore platforms and wind turbines that face fierce winds and storms. It offers the best resistance in freezing conditions. |
Common Steel Grades and Their Applications
| Grade | Application | Key Characteristics |
|---|---|---|
| S355JR | Construction, heavy machinery | Good weldability, impact resistance |
| S355J2 | Offshore platforms, wind towers | Improved low-temperature impact resistance |
| ASTM A36 | Buildings, bridges, machinery | Excellent welding properties |
| EN 10025 S275JR | Frames, supports, general engineering | Good machinability |
| JIS G3101 SS400 | Ships, bridges, buildings | High strength, good weldability |
| BS4360 Gr43A | Structural applications | High strength, good weldability |
Benefits of Steel Sheets
| Cost-effectiveness and affordability | Ease of fabrication and machinability | Corrosion resistance and longevity with proper treatment |
|---|---|---|
| Steel sheet is more economical when compared to the other types of steel. It is affordable and offers good value and this makes it ideal for projects that are huge and have some strict budgets. | These sheets are very ideal for cutting, bending and even welding exercises as well. Standard operations of fabrication such as drilling, cutting, and welding are easy and thus lessen the time and money used in production. | Even though steel sheet is more vulnerable to corrosion, methods such as galvanising are effective at increasing rust protection. Steel sheet can effectively serve its purpose for several years, and with proper treatment, these products have a long lifespan. |
Sizes and Thicknesses
| Grades | Width | Length | Thickness |
|---|---|---|---|
| ASTM A36 | Up to 3000mm | Up to 9000mm | From 6mm |
| EH36 | Up to 3000mm | Up to 9000mm | From 6mm |
| EN 10025 S275JR | Up to 3000mm | Up to 9000mm | From 6mm |
| EN 10025 S355JR/J0/J2 | Up to 3000mm | Up to 9000mm | From 6mm |
| JIS G3101 SS400 | Up to 3000mm | Up to 9000mm | From 6mm |
| BS4360 Gr43A | Up to 3000mm | Up to 9000mm | From 6mm |
Thickness variations and implications
Usually, thicknesses vary to meet the needs of various applications:
- Thin sheets: Used in the appliance and automobile sectors.
- Medium sheets: Perfect for applications in building and structural engineering.
- Thick sheets: Used to build ships and massive equipment.
Quality standards and certification requirements
For mild steel sheet selection, the quality of the materials must be of superior quality for better construction. At Chuan Leong, we closely follow ASTM and EN specifications, which are common in the international market. Our dedication towards quality also guarantees that you will get the best quality materials available in the market.
Chuan Leong: Reliable And Affordable
- Experience and expertise: With more than 50 years of expertise in the steel sector, we are aware of your demands and know how to address them.
- Quality with affordability: We guarantee that the products you get comply with the highest standards and have very affordable pricing.
- Customer-centric approach: Whether you want assistance choosing the appropriate grade or have inquiries regarding your order, our professional support team is here to help you at all times.
- Tailored solutions: We provide customisation choices to meet your particular needs. optimum efficiency is guaranteed by our expert team.
EN 10025 Standard Overview
The EN 10025 standard outlines the guidelines for structural steel products. It defines how strong and tough the steel must be to ensure it works well for construction and engineering projects. Engineers rely on this standard to make sure the steel they use in buildings, bridges, and other structures is safe and dependable.
Significance of EN 10025
EN 10025 plays a crucial role in guiding the quality and strength of structural steel. It ensures steel performs well under pressure, can bend and shape without breaking, and stays strong even in tough conditions. By following this standard, builders can avoid material failures and build structures that stand tall and last for many years.
This standard makes sure steel welds easily, so workers can connect pieces of steel smoothly and quickly. It also guarantees steel can endure different weather conditions, like freezing cold or high heat, without losing strength. This is very important for big projects like bridges or high-rise buildings.
Key Grades Defined by EN 10025
EN 10025 includes several grades of steel, each designed for specific types of structures. Here’s a look at some important ones:
- S355: This high-strength steel works well in demanding projects. Builders use it for bridges, large machines, and offshore platforms because it stays strong and tough. It also welds easily and handles impact well, making it ideal for big engineering jobs.
- S235: A lower-strength steel used for smaller, less demanding projects. It’s perfect for lighter structures like frames and supports. It costs less and is easier to work with, which makes it useful for general construction jobs.
- S275: This steel falls in the middle when it comes to strength. It balances durability with ease of use, making it suitable for building frames, beams, and other general structures.
- S460: The strongest of the grades, S460 shines in projects that need to handle heavy loads. Engineers use it for skyscrapers, large bridges, and heavy-duty equipment because it can support a lot of weight without weakening.
Comparison of Structural Steel Grades
- S235: Perfect for simple structures that don’t need much strength. Builders use it for things like frames, supports, and small buildings.
- S275: Stronger than S235, this steel fits medium-sized structures like building frames and steel columns. It’s strong but easy to shape and work with.
- S355: Known for its toughness, S355 handles heavy jobs like large bridges, industrial buildings, and big machinery.
- S460: The toughest of all, S460 works well in projects with huge demands. Builders use it for very large structures that need to hold a lot of weight, like offshore platforms or tall buildings.
Why the EN 10025 Standard is Important
EN 10025 helps engineers pick the right steel for each project. It makes sure the steel is strong enough, easy to work with, and able to handle tough weather. By choosing steel that follows this standard, builders can create safe and durable structures that last a long time. Whether it’s a bridge, a high-rise building, or a big machine, EN 10025 ensures the steel used will hold up under pressure.
The standard also makes it easier to weld and shape steel, which speeds up construction and saves time. It helps prevent common problems like cracks or weak spots, which can happen if the steel doesn’t meet the right requirements.
Supply Range
We offer steel sheets up to 3000mm wide and 9000mm long. Thicknesses start from 6mm. Custom sizes are available based on your project needs.
Customization Options
- Laser Cutting: Delivers precise cuts and clean edges.
- Plasma Cutting: Suitable for thick sheets with fast processing.
- CNC Cutting: Ensures high precision with automated controls.
Applications of S355 Steel Sheets
- Construction: S355 steel sheets support the building of large structures like bridges, buildings, and factories, where extra strength is needed.
- Heavy Machinery: These sheets power the creation of large machines and tools that need to stay strong and last a long time.
- Offshore Platforms: S355 steel stands firm in offshore platforms and wind towers, enduring tough weather, cold, and strong winds.
- Structural Engineering: S355 sheets anchor projects in structural engineering, where high strength holds up heavy supports and beams.
- Cold Climate Applications: S355 steel stays tough in freezing temperatures, making it perfect for projects in very cold places.
- Dynamic Load Structures: S355 strengthens structures that carry moving loads like cranes, trucks, and forklifts, ensuring they handle constant use.
- Shipbuilding and Automotive: S355 steel sheets mould into parts for ships and cars, where they resist pressure and heavy forces.
- Fabrication: These sheets carve out excellent materials for shaping, bending, and welding in factories, combining strength and flexibility.
S235 vs S275 Steel Sheets
| Feature | S235 | S275 |
|---|---|---|
| Tensile Strength | S235 handles lighter loads, so it suits smaller projects and simple frames. | S275 balances well between light and heavy, offering strength for medium-load projects. |
| Impact Resistance | S235 struggles with impacts and doesn't work well in tough weather. | S275 resists impacts better than S235, but doesn't match the strength of S355 in extreme conditions. |
| Weldability | S235 connects well for lighter work like small buildings and frames. | S275 links up well too, helping with general engineering tasks and building supports. |
| Uses | S235 goes into basic construction, light structures, and frames that don't carry heavy loads. | S275 suits general engineering and projects that require medium-strength supports. |
| Cost | S235 costs the least and fits projects that don't need a lot of strength. | S275 offers a balance between cost and strength, working for most general projects. |
Frequently Asked Questions
Interested in high-quality steel sheets? Contact Chuan Leong today for competitive pricing and reliable delivery. Our team is ready to assist with all your steel needs. Visit our contact page to get started.