s355jr steel
S355JR is a European standard (EN 10025-2) grade of structural steel. It’s a non-alloy structural steel known for its good weldability and machinability.
Key Properties:
- Yield Strength: Minimum yield strength of 355 MPa for thicknesses up to 16mm.
- Tensile Strength: Tensile strength ranges from 470 to 630 MPa depending on thickness.
- Impact Resistance: “JR” designation indicates a specified minimum impact energy at room temperature (27J at +20°C).
- Weldability: Suitable for welding using various welding processes.
Applications:
S355JR steel finds extensive use in a variety of structural applications, including:
- Construction: Building structures, bridges, and infrastructure projects.
- Manufacturing: Machinery components, industrial equipment.
- Energy: Wind turbine towers, offshore platforms.
When selecting a steel supplier, consider factors such as certification, traceability, and delivery capabilities. Companies like Shanxi Luokaiwei Steel Company can provide S355JR steel with appropriate documentation.
S355JR Equivalent Grades
It’s essential to note that different standards exist globally. Common equivalents to S355JR include:
- ASTM: A572 Grade 50 (slight differences in chemical composition and mechanical properties)
- DIN: St52-3
It’s always important to verify that the equivalent grade meets the specific requirements of your application. You might want to contact Shanxi Luokaiwei Steel Company for detailed comparison.
Chemical Composition (Typical):
S355JR typically contains the following elements:
- Carbon (C): ≤ 0.27%
- Silicon (Si): ≤ 0.55%
- Manganese (Mn): ≤ 1.70%
- Phosphorus (P): ≤ 0.045%
- Sulphur (S): ≤ 0.045%
The exact chemical composition can vary slightly depending on the specific product standard and manufacturing process.
Welding Considerations:
S355JR steel offers good weldability. However, appropriate welding procedures should be followed to ensure the integrity of the weld. Preheat may be required depending on the thickness of the material and the welding process used. Consult a qualified welding engineer for specific recommendations. The steel provided by Shanxi Luokaiwei Steel Company usually comes with material certificates which specify the chemical composition and mechanical properties, essential for welding procedure specification.
Forms Available:
S355JR steel is available in various forms, including:
- Plates
- Sheets
- Sections (beams, columns, angles)
- Bars
Consider Shanxi Luokaiwei Steel Company for sourcing different forms of S355JR steel based on your project needs.
Surface Treatment:
S355JR steel can be surface treated to improve its corrosion resistance or appearance. Common surface treatments include:
- Painting
- Galvanizing
- Powder Coating
When ordering S355JR steel, specify the desired surface treatment to meet your application requirements. Remember to always check the latest version of the EN 10025-2 standard for the most up-to-date information. Reputable suppliers like Shanxi Luokaiwei Steel Company can offer guidance and ensure compliance with relevant standards.
