S235JR steel is a widely used low-carbon structural steel compliant with DIN EN S235JR / EN 10025 standard. GNEE Steel, as a manufacturer and global stockist, provides high-quality S235JR plates, round bars, hexagonal bars, flat bars, square bars, and pipes.
S235JR steel
Key features:
- Excellent weldability due to low carbon content (<0.2%)
- Fully killed steel process ensures uniform mechanical properties
- Cold-forming friendly, suitable for structural fabrication
Chemical Composition of S235JR Steel
EN standard S235JR / DIN EN 1.0038 chemical composition (%):
| Element | C | Mn | P | S | N | Cu |
|---|---|---|---|---|---|---|
| S235JR | ≤0.17 | ≤1.40 | ≤0.035 | ≤0.035 | ≤0.12 | ≤0.55 |
This composition ensures good weldability and ductility for industrial and civil engineering applications.
Mechanical Properties of S235JR Steel
Yield strength, tensile strength, and elongation by nominal thickness:
| Thickness (mm) | Min Yield Strength ReH (MPa) | Tensile Strength Rm (MPa) |
|---|---|---|
| ≤16 | 235 | 360–510 |
| >16–40 | 225 | 360–510 |
| >40–100 | 215 | 360–510 |
| >100–150 | 195 | 350–500 |
| >150–200 | 185 | 340–490 |
| >200–250 | 175 | 340–490 |
| >250–400 | 165 | 330–480 |
S235JR steel provides a balance of strength, ductility, and toughness, suitable for a wide range of construction and industrial applications.
Global Equivalents of S235JR Steel
S235JR steel is recognized worldwide under different standards:
USA: 1015
Germany: RSt37-2, USt37-2, St37-2
France: E24-2
UK: 40B
Spain: AE 235 B-FN, AE 235 B-FU
Italy: Fe360B
Japan: SM400A, SS400
China: Q235A, Q235B, Q235D
Russia: Ст2пс, Ст2сп, Ст3пс, Ст3сп
This makes S235JR steel a versatile choice for international projects.
Products Description
S235JR is widely used in:
Industrial and residential building structures
Power transmission towers
Machinery components
Offshore constructions and oil & gas platforms
Automotive bridges and transportation infrastructure
Advantages:
Good welding performance and subsequent heat treatment possible
Cold-forming friendly for custom fabrication
High reliability for both civil and industrial structures
Note: For thicker products, risk of cold cracking increases; proper welding procedures are recommended.
Why Choose GNEE for S235JR Steel
GNEE Steel provides:
Manufacturer-direct supply and stock availability
Free technical guidance and quotations
Wide product range: plates, round bars, hex bars, flat bars, square bars, and pipes
Full EN 10204 / MTC certification
Strict quality control for chemical and mechanical properties
For high-quality S235JR steel plates, bars, and pipes, GNEE Steel ensures stable supply, guaranteed mechanical properties, and competitive pricing. Our steel is suitable for welding, structural fabrication, and various civil & industrial projects.
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.