S235JR is often compared with structural steel grades such as ST37-2, SS400, Q235B, A36, and A283 Grade C. However, these grades are not necessarily direct one-to-one equivalents because their chemical composition, mechanical properties, testing requirements, and applicable standards can differ. Material substitution should be confirmed against the project specification and applicable standards.
S235JR is a non-alloy structural steel grade specified in EN 10025-2, with the material number 1.0038. The designation "S235" indicates a minimum yield strength of 235 MPa for the relevant thickness range, while "JR" refers to the specified impact test condition at +20°C.
S235JR steel
GNEE Steel is a manufacturer and exporter of S235JR steel plates, sheets, and structural components. Our S235JR products are manufactured according to applicable EN requirements and can be supplied with material certificates and customized processing services for construction and industrial applications.
S235JR Steel Equivalent Grades
There are several internationally recognized equivalent grades of EN 1.0038 S235JR steel:
| Grade | Standard | Common Comparison with S235JR | Important Difference |
|---|---|---|---|
| S235JR | EN 10025-2 | Reference grade | European structural steel |
| ST37-2 | DIN 17100 | Frequently compared | Older German designation |
| SS400 | JIS G3101 | Comparable structural grade | Japanese standard |
| Q235B | GB/T 700 | Comparable structural grade | Chinese standard |
| A36 | ASTM A36 | Comparable structural grade | ASTM structural steel |
| A283 Grade C | ASTM A283 | Comparable low-carbon structural steel | Different strength requirements |
These grades should be treated as comparable grades rather than automatically interchangeable materials. The final selection should be based on the required standard, mechanical properties, chemical composition, and project specifications.
Chemical Composition of S235JR and Equivalent Grades
EN standard 1.0038 material S235JR steel chemical composition (%):
| 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 |
| ST37-2 | 0.21 max | - | - | 0.065 max | 0.065 max | - | 0.010 max |
| SS400 | - | - | - | 0.050 max | 0.050 max | - | - |
| Q235B | 0.20 max | 0.35 max | 1.40 max | 0.045 max | 0.045 max | - | - |
| A36 | 0.26 max | 0.40 max | - | 0.040 max | 0.050 max | 0.20 min | - |
| A283 Gr. C | 0.24 max | 0.04 max | 0.09 max | 0.035 max | 0.040 max | 0.20 min | - |
Chemical composition requirements may vary according to the product thickness, deoxidation method, analysis type, and applicable edition of EN 10025-2. The values shown on this page should therefore be verified against the applicable standard and material certificate for the supplied product.
Mechanical Properties of S235JR Steel – Plate Thickness 3–16 mm
Mechanical performance (3–16mm thickness)
| Grade | Yield Strength ReH (MPa) | Tensile Strength Rm (MPa) | Elongation A (%) | Charpy V Test (J) |
|---|---|---|---|---|
| S235JR | 235 | 360–510 | 26 | 27 |
| ST37-2 | 235 | 360–510 | 26 | 27 |
| SS400 | 245 | 400–500 | 21 | - |
| Q235B | 235 | 370–500 | 26 | 27 |
| A36 | 250 | 400–550 | 23 | - |
| A283 Gr. C | 205 | 380–515 | 25 | - |
The values above are provided for comparison only. Equivalent or comparable grades may have different thickness-dependent requirements, testing conditions, and acceptance criteria under their respective standards.
S235JR Steel Applications
- Bolted and welded structural components
- Industrial frameworks and support beams
- Construction of bridges, towers, and heavy machinery
- General engineering structures requiring durable low-carbon steel
- Welded and bolted structural frames
- Building columns, beams, brackets, and support structures
- Industrial platforms, equipment frames, and machinery supports
- General engineering structures and fabricated components
- Bridge-related structural components where the project specification permits S235JR
The excellent combination of strength, ductility, and weldability makes S235JR widely favored by engineers globally.
Why Choose GNEE S235JR Steel
GNEE Steel offers:
- Direct manufacturing and stock supply
- Full EN 10204 / MTC certificates
- Free technical advice, quotations, and samples
- Customized sizing and cutting services
Strict quality control including chemical analysis and mechanical testing
GNEE Steel supplies S235JR steel plates and sheets with customized dimensions and processing options. Depending on project requirements, available services may include cutting, surface treatment, and material documentation such as EN 10204 inspection certificates.
S235JR Material Documentation
For project orders, GNEE Steel can provide relevant material documentation according to customer requirements, such as EN 10204 material certificates, chemical composition results, mechanical test results, and inspection
Contact us for the latest S235JR 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.