ASTM A36 vs S355JR: 71% composition overlap. Some similarities but notable differences in alloying elements.
ASTM A36 vs S355JR
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).
S355JR
1.0045
High-strength low-alloy structural steel with minimum yield strength of 355 MPa. Standard grade for bridges, buildings, cranes, and general structural applications. Impact tested at +20°C (JR).
| ASTM A36 | S355JR | |
|---|---|---|
| Material Number | K02600 | 1.0045 |
| Category | Carbon Steel | Carbon Steel |
| Standard | ASTM A36/A36M | EN 10025-2 |
Chemical composition (wt%)
| Element | ASTM A36 | S355JR | Overlap |
|---|---|---|---|
| C | 0–0.26% | 0–0.24% | OK |
| Si | 0–0.4% | 0–0.55% | OK |
| Mn | 0–1.03% | 0–1.6% | OK |
| P | 0–0.04% | 0–0.035% | OK |
Mechanical properties
| Property | ASTM A36 | S355JR | Unit |
|---|---|---|---|
| tensile_strength | 400–550 | 470–630 | MPa |
| yield_strength | ≥ 250 | ≥ 355 | MPa |
| elongation | ≥ 20 | ≥ 22 | % |
Compatibility Assessment
ASTM A36 and S355JR share some characteristics (71% overlap) but have notable differences. They may be substitutable in some applications but not all. Verify suitability carefully.
Automated assessment based on composition analysis
Frequently Asked Questions
Is ASTM A36 the same as S355JR?
ASTM A36 and S355JR have a 71% composition overlap. For most purposes, they can be considered similar.
Can I replace ASTM A36 with S355JR?
In many cases, yes. The compositions overlap significantly (71%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between ASTM A36 and S355JR?
The main differences are in the following elements: overall alloying content. ASTM A36 is a Carbon Steel grade, while S355JR is a Carbon Steel grade.
Related Comparisons
View full data for each material:
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.