ASTM A36 vs S355ML: 66% composition overlap. Moderate differences, generally not direct substitutes.
ASTM A36 vs S355ML
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).
S355ML
1.8834
Thermomechanically rolled fine-grain structural steel — ReH >=355 MPa with Charpy at -50°C (KV >=27J). THE workhorse for large welded steel structures in cold environments. TM rolling = low CEV = excellent weldability even in thick plate. Used for offshore platforms, wind turbine towers, bridges, crane structures, and pressure vessels. Most common TM grade by tonnage.
| ASTM A36 | S355ML | |
|---|---|---|
| Material Number | K02600 | 1.8834 |
| Category | Carbon Steel | Carbon Steel |
| Standard | ASTM A36/A36M | EN 10025-4 |
Chemical composition (wt%)
| Element | ASTM A36 | S355ML | Overlap |
|---|---|---|---|
| C | 0–0.26% | 0–0.14% | OK |
| Si | 0–0.4% | 0–0.5% | OK |
| Mn | 0–1.03% | 0–1.6% | OK |
| P | 0–0.04% | — | — |
Mechanical properties
| Property | ASTM A36 | S355ML | Unit |
|---|---|---|---|
| tensile_strength | 400–550 | 450–610 | MPa |
| yield_strength | ≥ 250 | ≥ 355 | MPa |
| elongation | ≥ 20 | ≥ 22 | % |
Compatibility Assessment
ASTM A36 and S355ML have moderate differences (66% 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 S355ML?
ASTM A36 and S355ML have a 66% composition overlap. They are generally not directly interchangeable.
Can I replace ASTM A36 with S355ML?
Generally not recommended. The compositions differ significantly (66% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between ASTM A36 and S355ML?
The main differences are in the following elements: overall alloying content. ASTM A36 is a Carbon Steel grade, while S355ML is a Carbon Steel grade.
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Data provided for reference only. Always verify against the applicable specification for critical applications.
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