Are you looking for high-quality S275JR steel for your construction or structural project? As a trusted manufacturer, GNEE Steel specializes in providing top-grade S275JR steel with excellent weldability and machinability.
S275JR steel
Our ready stock of over 50,000 tons of S275JR steel ensures that we can meet your project deadlines with shipment within 7 days. Read on to learn more about the features, properties, and applications of S275JR steel.
Comprehensive Overview of S275JR Steel
S275JR is a European structural steel grade defined by the EN 10025 standard. This low-carbon steel offers a balanced combination of strength and ductility, making it an ideal choice for structural applications that require flexibility and reliability.
The primary alloying elements-carbon (C), manganese (Mn), and silicon (Si)-contribute to the material's outstanding performance.
Key Characteristics:
- Yield Strength: Minimum yield strength of 275 MPa
- Tensile Strength: 410-560 MPa
- Ductility: Typically 20% elongation in 50 mm
- Weldability: Excellent for a range of welding processes
Chemical Composition and Mechanical Properties of S275JR Steel
Chemical Composition of S275JR
| Element | Percentage Range (%) |
|---|---|
| C (Carbon) | 0.14 - 0.22 |
| Mn (Manganese) | 1.0 - 1.6 |
| Si (Silicon) | 0.0 - 0.4 |
| P (Phosphorus) | ≤ 0.04 |
| S (Sulfur) | ≤ 0.04 |
These alloying elements enhance the steel's strength, toughness, and resistance to oxidation during processing.
Mechanical Properties
| Property | Condition | Value (Metric) | Value (Imperial) | Test Method |
|---|---|---|---|---|
| Yield Strength | As Rolled | 275 MPa | 40 ksi | EN 10002-1 |
| Tensile Strength | As Rolled | 410 - 560 MPa | 60 - 81 ksi | EN 10002-1 |
| Elongation | As Rolled | ≥ 20% in 50 mm | - | EN 10002-1 |
| Hardness (Brinell) | As Rolled | ≤ 195 HB | - | EN 10003-1 |
These properties ensure S275JR performs well under dynamic and static loads, making it an excellent choice for various structural applications.
Physical Properties of S275JR Steel
| Property | Value (Metric) | Value (Imperial) |
|---|---|---|
| Density | 7850 kg/m³ | 490 lb/ft³ |
| Melting Point | 1420 - 1460 °C | 2590 - 2660 °F |
| Thermal Conductivity | 50 W/m·K | 34.5 BTU·in/h·ft²·°F |
| Coefficient of Thermal Expansion | 12 x 10⁻⁶ /K | 6.7 x 10⁻⁶ /°F |
These physical properties indicate that S275JR steel is well-suited for applications requiring mass and thermal stability.
Applications of S275JR Steel
S275JR is widely used across various industries due to its strength, ductility, and ease of fabrication. Some of the key applications include:
Construction: Ideal for beams, columns, and frames in buildings and infrastructure.
Automotive: Used for chassis components requiring both strength and ductility.
Shipbuilding: Utilized for hull structures due to its durability and corrosion resistance in marine environments.
Corrosion Resistance
S275JR exhibits moderate corrosion resistance, making it suitable for most structural applications but requiring protective coatings in more aggressive environments, such as:
- Atmospheric conditions: Susceptible to rust, requires protective coatings.
- Chlorides: Vulnerable to pitting corrosion.
- Acidic environments: Not recommended due to poor corrosion resistance.
Heat Resistance and Fabrication Properties
S275JR is suitable for use in environments with temperatures up to 400°C. For welding and machining:
- Weldability: Excellent, suitable for various welding processes (MIG, TIG, Stick).
- Machinability: Good, with an efficient cutting speed of 80 m/min.
- Formability: Excellent for cold and hot forming processes.
S275JR steel is a versatile, cost-effective, and reliable material for a wide range of structural applications. Its combination of strength, ductility, and weldability makes it an ideal choice for engineers and fabricators worldwide.
Whether you are looking for S275JR steel for construction, automotive, or shipbuilding, GNEE Steel provides high-quality material ready to meet your project needs.
Contact us for the latest S275JR steel price list!
What is material S275JR?
S275JR grade steel is a readily weldable low carbon manganese steel with good impact resistance. This material is commonly supplied in the untreated or normalised condition. Machinability of this material is similar to that of mild steel.
What is S275JR equivalent in China?
S275JR EN 10025 equivalent steel material in China is Q275 steel. S275JR EN 10025 equivalent steel Q275 is a Chinese carbon structural steel, whose minimum yield strength is 275 MPa.
Is S275JR hot rolled?
The 2500 x 1250 x 6mm Hot Rolled Plate – S275JR is a structural steel plate produced to BS EN 10025-2 standards. Manufactured using the hot rolling process, this plate offers excellent formability, weldability, and strength, making it suitable for a wide range of fabrication and structural applications.
What does S235JR stand for?
The letter S stands for that the steel plate is structural. The number 235 indicates steel's yield strength. The letter JR means that the steel grade has undergone a Charpy impact test and is of high quality. The S235JR is a specification given to it, with each symbol indicating something different.