ASTM A36 vs S235JR: Very similar structural steels from different standard systems
ASTM A36 vs S235JR
Side-by-side chemical composition and mechanical property comparison.
Overview
ASTM A36
K02600
The most common structural carbon steel in the US. Low carbon content with good weldability and machinability. Used for buildings, bridges, construction equipment, and general structural purposes. Minimum yield strength 36 ksi (250 MPa).
S235JR
1.0038
General-purpose structural steel with minimum yield strength of 235 MPa. The most common structural steel grade in Europe for general construction, frames, and non-critical structural applications.
| ASTM A36 | S235JR | |
|---|---|---|
| Material Number | K02600 | 1.0038 |
| Category | Carbon Steel | Carbon Steel |
| Standard | ASTM A36/A36M | EN 10025-2 |
Chemical composition (wt%)
| Element | ASTM A36 | S235JR | Overlap |
|---|---|---|---|
| C | 0–0.26% | 0–0.17% | OK |
| Si | 0–0.4% | 0–0.4% | OK |
| Mn | 0–1.03% | 0–1.4% | OK |
| P | 0–0.04% | 0–0.035% | OK |
Mechanical properties
| Property | ASTM A36 | S235JR | Unit |
|---|---|---|---|
| tensile_strength | 400–550 | 360–510 | MPa |
| yield_strength | ≥ 250 | ≥ 235 | MPa |
| elongation | ≥ 20 | ≥ 26 | % |
Compatibility Assessment
A36 has slightly higher yield strength (250 vs 235 MPa) and higher allowed carbon (0.26% vs 0.17%). Both used for general structural applications. A36 is the US standard, S235JR is the EU standard.
Frequently Asked Questions
Is ASTM A36 the same as S235JR?
ASTM A36 and S235JR have a 85% composition overlap. Very similar structural steels from different standard systems
Can I replace ASTM A36 with S235JR?
In many cases, yes. The compositions overlap significantly (85%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between ASTM A36 and S235JR?
The main differences are in the following elements: overall alloying content. ASTM A36 is a Carbon Steel grade, while S235JR is a Carbon Steel grade.
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.