ASTM A36 vs C15E: 53% composition overlap. Moderate differences, generally not direct substitutes.
ASTM A36 vs C15E
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).
C15E
1.1141
Low-carbon unalloyed case hardening steel — 0.12-0.18% C. Between C10E (softer core) and C22E (harder core) in the case-hardening range. Good balance of surface hardness (HRC 58-62) and core toughness after carburizing. Modern designation for Ck15. Used for small gears, pins, bushings, levers, and carburized parts where moderate core strength is acceptable. Also used for cold forming and deep drawing.
| ASTM A36 | C15E | |
|---|---|---|
| Material Number | K02600 | 1.1141 |
| Category | Carbon Steel | Carbon Steel |
| Standard | ASTM A36/A36M | EN 10084 |
Chemical composition (wt%)
| Element | ASTM A36 | C15E | Overlap |
|---|---|---|---|
| C | 0–0.26% | 0.12–0.18% | OK |
| Si | 0–0.4% | 0–0.4% | OK |
| Mn | 0–1.03% | 0.3–0.6% | OK |
| P | 0–0.04% | 0–0.025% | OK |
Mechanical properties
| Property | ASTM A36 | C15E | Unit |
|---|---|---|---|
| tensile_strength | 400–550 | 350–490 | MPa |
| yield_strength | ≥ 250 | 210–260 | MPa |
| elongation | ≥ 20 | 25–32 | % |
Compatibility Assessment
ASTM A36 and C15E have moderate differences (53% 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 C15E?
ASTM A36 and C15E have a 53% composition overlap. They are generally not directly interchangeable.
Can I replace ASTM A36 with C15E?
Generally not recommended. The compositions differ significantly (53% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between ASTM A36 and C15E?
The main differences are in the following elements: overall alloying content. ASTM A36 is a Carbon Steel grade, while C15E 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.