ASTM A36 vs C35E: 48% composition overlap. Significantly different materials serving different application areas.
ASTM A36 vs C35E
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).
C35E
1.1181
Mid-carbon unalloyed Q&T steel — 0.32-0.39% C. Good balance between strength and toughness/weldability. Modern designation for Ck35. Used for moderately loaded shafts, axles, bolts, connecting rods, and machine parts where C45 would be too hard and C22E too soft. Also suitable for surface hardening (flame/induction) to HRC 50-55.
| ASTM A36 | C35E | |
|---|---|---|
| Material Number | K02600 | 1.1181 |
| Category | Carbon Steel | Carbon Steel |
| Standard | ASTM A36/A36M | EN 10083-2 |
Chemical composition (wt%)
| Element | ASTM A36 | C35E | Overlap |
|---|---|---|---|
| C | 0–0.26% | 0.32–0.39% | No overlap |
| Si | 0–0.4% | 0–0.4% | OK |
| Mn | 0–1.03% | 0.5–0.8% | OK |
| P | 0–0.04% | 0–0.025% | OK |
Mechanical properties
| Property | ASTM A36 | C35E | Unit |
|---|---|---|---|
| tensile_strength | 400–550 | 630–780 | MPa |
| yield_strength | ≥ 250 | 370–460 | MPa |
| elongation | ≥ 20 | 17–22 | % |
Compatibility Assessment
ASTM A36 and C35E have significantly different compositions (48% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is ASTM A36 the same as C35E?
ASTM A36 and C35E have a 48% composition overlap. They are generally not directly interchangeable.
Can I replace ASTM A36 with C35E?
Generally not recommended. The compositions differ significantly (48% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between ASTM A36 and C35E?
The main differences are in the following elements: C. ASTM A36 is a Carbon Steel grade, while C35E 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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