S235JR and S235J2 steel are common low-carbon structural steels produced under EN 10025-2 standard. Both grades are fully killed, offering excellent weldability and good cold-forming properties.
S235JR
GNEE Steel is a leading manufacturer and stockist, supplying both S235JR and S235J2 steel plates, sheets, and structural parts for industrial and construction applications.
Within the first 100 words, we highlight that GNEE is a direct manufacturer, providing high-quality steel with guaranteed mechanical properties. Both grades are widely used in heavy machinery, construction, and transportation sectors.
Key Difference Between S235JR and S235J2 Steel
While S235JR and S235J2 steel share similar chemical composition and mechanical properties, the main difference lies in impact requirements:
S235JR: Standard impact energy at +20°C
S235J2: Standard impact energy at -20°C
This difference ensures that S235J2 is more suitable for low-temperature applications where higher toughness is required.
Chemical Composition – S235JR vs S235J2
| Grade | C (t≤16mm) | Si | Mn | P | S | Cu | N |
|---|---|---|---|---|---|---|---|
| S235JR | 0.19 max | - | 1.5 max | 0.045 max | 0.045 max | 0.60 max | 0.014 max |
| S235J2 | 0.19 max | - | 1.5 max | 0.035 max | 0.035 max | 0.60 max | - |
Both grades maintain low carbon content to ensure excellent weldability and ductility.
Mechanical Properties – S235JR vs S235J2
| Grade | Yield Strength ReH (MPa) | Tensile Strength Rm (MPa) | Elongation A (%) | Charpy V Test Temp (°C) | Impact Energy Longitudinal (J) |
|---|---|---|---|---|---|
| S235JR | 235 | 360–510 | 26 | +20 | 27 |
| S235J2 | 235 | 360–510 | 24 | -20 | 27 |
The impact temperature difference is critical for engineers selecting steel for low-temperature environments.
Applications of S235JR and S235J2 Steel Plates
Both grades are widely used in:
- Freight cars and trailers
- Transmission towers
- Cranes and lifting equipment
- Bulldozers and excavators
- Dump trucks and industrial machinery
S235JR is ideal for general structural applications in normal temperature environments, while S235J2 is preferred for cold conditions where additional toughness is required.
Why Choose GNEE for S235JR and S235J2 Steel
GNEE Steel provides:
- Direct supply from manufacturer with stock availability
- EN 10204 / Mill Test Certificates (MTC)
- Free technical consultation and sample support
- Custom cutting and fabrication services
- Strict quality control including mechanical and chemical testing
This ensures consistent quality and project reliability for all your structural steel needs.
For high-quality S235JR and S235J2 steel plates, GNEE Steel is your trusted partner. Both low-carbon structural steels provide excellent weldability, cold-forming properties, and toughness suitable for a variety of industrial and construction projects.
Contact us today for the latest S235JR & S235J2 steel plate price list
What is S235JR material?
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 is S235JR steel equivalent to?
ASTM A36: ASTM A36 is an American standard carbon structural steel specification, which is often used in structural applications. It is closest to S235JR in terms of chemical composition.
What does the JR stand for in S235JR?
S235JR: The letter "S" stands for "Structural," indicating that the steel is a construction steel. The number "235" represents the minimum yield strength, i.e., 235 MPa (megapascals). The symbol "JR" refers to the toughness and impact resistance of the steel.
What is the yield strength of S 235 Jr?
Grade S235JR has a minimum yield strength of 235 MPa. The impact energy at a room temperature of 20°C is at least 27 joules. Steels of grade S235JR are suitable for low-stressed parts in steel and mechanical engineering.
Is S235JR a mild steel?
S235JR is a specific grade of mild steel defined under EN 10025. While it sits within the mild steel category, it has controlled chemical and mechanical properties that make it more predictable than generic or ungraded mild steel.
What is S235JR steel material?
S235JR is a low-carbon, non-alloy structural steel defined by the EN 10025-2 standard. The "S" stands for "structural," meaning it is intended for use in load-bearing parts of buildings, machinery, or infrastructure.
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.