Products Overview
S275JR Beam Steel is a hot-rolled structural steel manufactured under the EN 10025-2:2004 standard, with material number 1.0044. The designation S275JR indicates:
S – Structural steel
275 – Minimum specified yield strength for thickness ≤16mm (275 MPa)
JR – Impact tested at 20°C
S275JR beams are widely used in mild steel structural construction, including bridges, oil and gas projects, power plants, MRT/metro rail stations, terminals, and other civil engineering applications. Its hot-rolled profile provides excellent load-bearing capacity and structural stability.
Chemical Composition (%)
| Element | C | Mn | P | S | N | Cu |
|---|---|---|---|---|---|---|
| S275JR Beam Steel | 0.21–0.22 | ≤1.50 | ≤0.040 | ≤0.040 | ≤0.012 | ≤0.55 |
The controlled chemical composition ensures good weldability, ductility, and toughness for structural applications.
Mechanical Properties
| Property | S275JR Beam Steel |
|---|---|
| Minimum Yield Strength (ReH) | 225–275 MPa |
| Tensile Strength (Rm) | 400–560 MPa |
| Minimum Elongation (A%) | 19–23% |
These mechanical properties make S275JR beams suitable for general structural engineering, providing reliable strength and stability under service loads.
Product Specifications
Forming: Hot-rolled steel
Length: 5.8 m, 9 m, 11.9 m
Delivery Condition: Normalizing, annealing, tempering, TMCP, PWHT, impact test, Q&T
Packaging: Standard sea-worthy packaging
Payment Terms: L/C, T/T
Applications of S275JR Beam Steel
S275JR beam steel is widely used in residential, commercial, and industrial construction projects. Its high yield strength, good ductility, and reliable tensile performance make it ideal for structural frameworks, support columns, and load-bearing beams.
Engineers and architects favor S275JR beams for multi-story buildings, warehouses, factories, and office complexes, where structural stability and safety are critical. The steel's excellent weldability allows for easy fabrication, cutting, and on-site assembly, ensuring efficient and precise construction workflows.
S275JR beams are commonly employed in bridge construction, railway stations, terminals, pedestrian walkways, and other infrastructure projects. The steel's high strength-to-weight ratio and toughness make it suitable for long-span structures and load-intensive applications, supporting heavy traffic, trains, or dynamic loads. Its resistance to deformation under stress ensures long-term reliability and low maintenance costs for public infrastructure.
In industrial applications, S275JR beam steel is used for oil and gas platforms, power plants, and heavy machinery support structures. Its combination of mechanical strength, ductility, and toughness allows it to handle dynamic and static loads while maintaining structural integrity.
The steel can also be subjected to normalizing, tempering, or impact tests, making it suitable for harsh environments, such as offshore platforms or energy installations.
S275JR beams are widely adopted in MRT/metro rail stations, terminals, and general civil engineering projects. Their reliable mechanical properties and excellent weldability make them suitable for frames, girders, and support structures in projects requiring both durability and ease of assembly.
The steel's versatility allows it to be used in a wide range of structural forms, from trusses and bridges to complex architectural frameworks.
The combination of mechanical strength, ductility, and weldability makes S275JR beam steel a versatile, cost-effective, and reliable solution for structural applications. Its ability to perform under moderate to heavy loads, combined with ease of fabrication and installation, ensures it remains a preferred material for engineers and architects worldwide.
Q1: What is S235JR steel?
A:
S235JR is a non-alloy structural steel produced according to EN 10025-2. It has a minimum yield strength of 235 MPa and is commonly used in general construction and engineering applications where moderate strength and good weldability are required.
Q2: What standard does S235JR comply with?
A:
S235JR complies with EN 10025-2:2004, which specifies technical delivery conditions for non-alloy structural steels. This standard ensures consistent chemical composition, mechanical properties, and quality across production batches.
Q3: What are the typical mechanical properties of S235JR?
A:
Yield strength: ≥ 235 MPa
Tensile strength: 360–510 MPa
Elongation: ≥ 20% (depending on section size)
S235JR provides good ductility and toughness for general structural applications.
Q4: Does S235JR require impact testing?
A:
Yes. As a JR grade, S235JR is impact tested at 20°C (room temperature). This ensures standard toughness for normal temperature applications but is not suitable for low-temperature service.
Q5: Is S235JR weldable?
A:
Yes. S235JR has excellent weldability due to its low carbon content. Standard welding methods, including arc and gas welding, can be applied. Preheating is usually not required for thin sections but may be applied for thicker sections to reduce residual stress.
Q6: What are the typical applications of S235JR steel?
A:
Structural frameworks for buildings and bridges
Support beams and columns
Machinery bases and fabrication
General engineering where moderate strength and toughness are sufficient
Q7: What size range is available for S235JR channel steel?
A:
S235JR channels are typically available in heights from 80 mm to 300 mm and thicknesses from 4 mm to 20 mm, depending on the manufacturer. Custom lengths and cutting services are often provided on request.
Q8: Can S235JR be cut or machined?
A:
Yes. S235JR can be flame cut, sawed, drilled, or milled using standard tools and procedures. Its moderate hardness allows easy processing without special equipment.
Q9: What inspection and certification are supplied with S235JR?
A:
S235JR is typically supplied with EN 10204 3.1 or 3.2 mill test certificates, covering chemical composition, mechanical properties, and dimensional verification. Additional testing, such as ultrasonic or magnetic particle inspection, can be provided for critical applications.