When it comes to choosing the right material for your project, it's essential to understand the difference between S275JR carbon steel and S355JR low alloy steel.
S275JR carbon steel
These two types of steel are both widely used in construction and structural applications but differ significantly in their composition and mechanical properties.
S275JR is classified as a carbon steel, whereas S355JR is a low alloy steel, which makes the latter stronger and more durable under various loading conditions. Both materials fall under the EN10025-2 standard, but the key distinctions lie in their strength and alloy content.
Chemical Composition of S275JR and S355JR
Below is a comparison of the chemical composition for S275JR carbon steel and S355JR low alloy steel:
| Grade | C (t ≤ 16mm) | Si | Mn (max) | P (max) | S (max) | Cu (max) | N (max) |
|---|---|---|---|---|---|---|---|
| S275JR | 0.24 max | - | 1.60 max | 0.045 | 0.045 | 0.60 max | 0.014 |
| S355JR | 0.27 max | 0.6 | 1.70 max | 0.045 | 0.045 | 0.60 max | 0.014 |
Mechanical Properties of S275JR and S355JR
The mechanical properties further highlight the differences between S275JR carbon steel and S355JR low alloy steel. The S355JR provides higher yield strength and tensile strength, making it more suitable for demanding structural applications.
| Grade | Yield Strength ReH (N/mm²) (t ≤ 16mm) min | Tensile Strength Rm (N/mm²) (3mm ≤ t ≤ 16mm) | Elongation A (%) (3mm ≤ t ≤ 40mm) min | Charpy V Test (Impact Energy) Temperature (°C) | Impact Energy (Longitudinal) J min |
|---|---|---|---|---|---|
| S275JR | 275 | 410-560 | 23 | 20°C | 27 |
| S355JR | 355 | 470-630 | 22 | 20°C | 27 |
As you can see, S355JR has a higher yield strength and tensile strength, which makes it more suitable for structural applications requiring higher resistance to deformation.
Key Advantages of S275JR and S355JR
S275JR Carbon Steel
Cost-effective material for general construction
Suitable for non-critical structural applications
Widely available and easy to weld
S355JR Low Alloy Steel
Higher strength and durability compared to carbon steel
Excellent performance in load-bearing structures
Superior to S275JR in heavy-duty applications
Why Choose Gnee Steel?
Gnee Steel has been a trusted supplier of high-quality steel materials for over 18 years, serving industries worldwide. Whether you are looking for S275JR carbon steel or S355JR low alloy steel, Gnee Steel offers comprehensive services, including detailed specifications, material data sheets, and competitive pricing.
For S275JR and S355JR steel, Gnee Steel provides:
- Chemical composition details
- Mechanical properties for both carbon steel and low alloy steel
- Custom sizes available
- Competitive pricing with on-time delivery
While S275JR carbon steel and S355JR low alloy steel share some similarities, they are designed for different applications. S355JR offers higher strength and durability, making it ideal for more demanding structural projects. If you need more information about S275JR or S355JR, or are looking for a price list, feel free to contact us.
Contact us for the latest S275JR and S355JR 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.