ASTM A36 vs S690QL: 52% composition overlap. Moderate differences, generally not direct substitutes.
ASTM A36 vs S690QL
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).
S690QL
1.8928
High-strength quenched and tempered fine-grain structural steel with minimum yield strength of 690 MPa. Used for heavily loaded structures like mobile cranes, mining equipment, bridges, and pressure vessels.
| ASTM A36 | S690QL | |
|---|---|---|
| Material Number | K02600 | 1.8928 |
| Category | Carbon Steel | Carbon Steel |
| Standard | ASTM A36/A36M | EN 10025-6 |
Chemical composition (wt%)
| Element | ASTM A36 | S690QL | Overlap |
|---|---|---|---|
| C | 0–0.26% | 0–0.2% | OK |
| Si | 0–0.4% | 0–0.8% | OK |
| Mn | 0–1.03% | 0–1.7% | OK |
| P | 0–0.04% | 0–0.02% | OK |
Mechanical properties
| Property | ASTM A36 | S690QL | Unit |
|---|---|---|---|
| tensile_strength | 400–550 | 770–940 | MPa |
| yield_strength | ≥ 250 | ≥ 690 | MPa |
| elongation | ≥ 20 | ≥ 14 | % |
Compatibility Assessment
ASTM A36 and S690QL have moderate differences (52% 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 S690QL?
ASTM A36 and S690QL have a 52% composition overlap. They are generally not directly interchangeable.
Can I replace ASTM A36 with S690QL?
Generally not recommended. The compositions differ significantly (52% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between ASTM A36 and S690QL?
The main differences are in the following elements: overall alloying content. ASTM A36 is a Carbon Steel grade, while S690QL is a Carbon Steel grade.
Related Comparisons
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Data provided for reference only. Always verify against the applicable specification for critical applications.
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