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Products Description of S235JR steel H beam
S235JR is classified as a non-alloy structural steel, specifically designed for use in construction and structural applications. The designation "S235" indicates a minimum yield strength of 235 MPa, while the "JR" suffix denotes that the steel has undergone a Charpy V-notch impact test at a temperature of 20°C.
This steel grade is widely recognized for its good mechanical properties, including high ductility and toughness, which are essential for structural integrity.
Products Specification of S235JR steel H beam
| Product Name | H Beam |
| Grade | Q195,Q215,Q235,Q345,16Mn,ASTMA36,ASTMA572,SS400,SS490,A36,S235JR,S275J2,S355JR,ST37,ST52,etc |
| Standard | AISI, ASTM, BS, DIN, GB, JIS, EN,etc |
| Flange Thickness | 4.5-35mm |
| Flange Width | 100-1000mm |
| Web Thickness | 4.5-70mm |
| Web Width | 100-450mm |
| Length | 5.8m,6m,9m,11.8m,12m or as your requirement |
| Surface | Perforated/galvanized/black/PaintBright, Polished, Turn smooth(Peeled),Brush, Mill,Pickled |
| Technique | Hot-rolled and High frequency welded |
| Application | 1.Industrial structure of the steel structure bearing bracket 2.Underground engineering steel pile and retaining structure 3.Petrochemical and electric power and other industrial equipment structure 4.Large span steel bridge components 5.Ships,machinery manufacturing frame structure 6.The train, automobile, tractor beam bracket 7.Port of conveyor belt, high speed damper bracket |
| Packing | In bulk or container,Standard seaworthy packing or as your required |
Chemical Composition of S235JR steel H beam
| Element (Symbol and Name) | Percentage Range (%) |
|---|---|
| C (Carbon) | 0.12 - 0.20 |
| Mn (Manganese) | 1.00 - 1.60 |
| Si (Silicon) | 0.10 - 0.40 |
| P (Phosphorus) | ≤ 0.045 |
| S (Sulfur) | ≤ 0.045 |
Mechanical Properties of S235JR steel H beam
| Property | Condition/Temper | Typical Value/Range (Metric - SI Units) | Typical Value/Range (Imperial Units) | Reference Standard for Test Method |
|---|---|---|---|---|
| Yield Strength (0.2% offset) | Hot Rolled | 235 MPa | 34.1 ksi | EN 10002-1 |
| Tensile Strength | Hot Rolled | 360 - 510 MPa | 52.2 - 73.8 ksi | EN 10002-1 |
| Elongation | Hot Rolled | ≥ 26% | ≥ 26% | EN 10002-1 |
| Reduction of Area | Hot Rolled | ≥ 50% | ≥ 50% | EN 10002-1 |
| Hardness (Brinell) | Hot Rolled | ≤ 170 HB | ≤ 170 HB | EN 10003-1 |
| Impact Strength | Charpy V-notch | ≥ 27 J at -20°C | ≥ 20 ft-lbf at -4°F | EN 10045-1 |
Products Application of S235JR steel H beam
Widely used in various building structures, bridges, vehicles, brackets, and machinery. For example, in industrial structures, S235JR H-beams can serve as steel bearing brackets, steel piles, and underground supporting structures, supporting loads up to 200–500 kN depending on the design.
In petrochemical and power plants, they are applied in equipment frames and pressure-resistant structures that require yield strength of 235 MPa and tensile strength of 360–510 MPa, ensuring reliable performance under moderate stress.
In shipbuilding and machinery manufacturing, S235JR H-beams are used in frame structures, decks, and hull supports, where elongation of 20–25% provides good ductility under dynamic loads.
For transport vehicles such as trains, cars, and tractors, they form beam brackets and chassis supports that endure both static and dynamic stresses. In ports and logistics facilities, they are used in conveyors and supporting structures, handling moderate loads while maintaining dimensional stability and ease of welding.
These applications highlight the good strength, toughness, weldability, and versatile performance of S235JR H-beams, making them suitable for a wide range of structural and industrial engineering projects.
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What is the difference between S235JR and S355JR?
Yield Strength: S235JR has a nominal yield strength of 235 MPa, while S355JR offers a higher yield strength of 355 MPa. This 50% increase in yield strength makes S355JR capable of withstanding greater loads, making it more suitable for high-stress structural applications.
What is S235JR steel?
Steel grade S235JR is a popular general construction and machine steel that is made in accordance with the EN 10025-2 standard. Classification: Non-alloy structural steel. Products: Semi-finished products, long products and sheet hot-rolled products, wire rod and forgings.
What does JR stand for in S235JR steel?
Impact Strength: The "JR" code means the steel can absorb at least 27 Joules (J) of energy during a Charpy V-notch impact test at 20°C. This shows the steel's resistance to sudden loads and its fracture toughness. Elongation: The minimum elongation value for S235JR steel is typically between 20-22%.
Is A36 equivalent to S235JR?
The ASTM equivalent of S235JR steel, a European standard structural steel, is ASTM A36. These are common mild steel grades used for general structural applications and have similar chemical compositions and mechanical properties.
What is the difference between S235JR and S275JR steel?
S235JR has a minimum yield strength of 235 MPa, while S275JR has a minimum yield strength of 275 MPa. This means that S275JR is stronger than S235JR and is typically used for more demanding applications, such as heavy machinery, high-rise buildings, and large structures.