ASTM A36 vs S355NL: 51% composition overlap. Moderate differences, generally not direct substitutes.
ASTM A36 vs S355NL
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).
S355NL
1.0546
Normalized fine-grain structural steel with 355 MPa yield and -50°C impact toughness. The most widely used fine-grain grade in EN 10025-3. Workhorse for offshore, bridges, cranes, and wind turbine towers in cold climates. Better low-temp toughness than S355J2.
| ASTM A36 | S355NL | |
|---|---|---|
| Material Number | K02600 | 1.0546 |
| Category | Carbon Steel | Carbon Steel |
| Standard | ASTM A36/A36M | EN 10025-3 |
Chemical composition (wt%)
| Element | ASTM A36 | S355NL | Overlap |
|---|---|---|---|
| C | 0–0.26% | 0–0.18% | OK |
| Si | 0–0.4% | 0–0.5% | OK |
| Mn | 0–1.03% | 1–1.65% | Partial |
| P | 0–0.04% | 0–0.025% | OK |
Mechanical properties
| Property | ASTM A36 | S355NL | Unit |
|---|---|---|---|
| tensile_strength | 400–550 | 470–630 | MPa |
| yield_strength | ≥ 250 | ≥ 355 | MPa |
| elongation | ≥ 20 | ≥ 22 | % |
Compatibility Assessment
ASTM A36 and S355NL have moderate differences (51% overlap). They are generally not direct substitutes. Consider the specific requirements of your application.
Automated assessment based on composition analysis
Frequently Asked Questions
Is ASTM A36 the same as S355NL?
ASTM A36 and S355NL have a 51% composition overlap. They are generally not directly interchangeable.
Can I replace ASTM A36 with S355NL?
Generally not recommended. The compositions differ significantly (51% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between ASTM A36 and S355NL?
The main differences are in the following elements: Mn. ASTM A36 is a Carbon Steel grade, while S355NL is a Carbon Steel grade.
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