ASTM A572 Grade 50 vs C67E: 37% composition overlap. Significantly different materials serving different application areas.
ASTM A572 Grade 50 vs C67E
Side-by-side chemical composition and mechanical property comparison.
Overview
ASTM A572 Grade 50
The most widely used structural steel grade in the United States. 345 MPa (50 ksi) yield strength HSLA steel. Has largely replaced A36 for structural applications due to higher strength-to-weight ratio. Used for building frames, bridges, heavy equipment, and general structural fabrication.
C67E
1.1231
Medium-high carbon spring steel — C 0.65-0.72%. The E suffix denotes controlled S+P (<=0.025% each). Used for cold-rolled spring strip (EN 10132-4), spring wire (EN 10270-1), and flat springs. Lower C than C75S/C85S = better toughness and formability. Also used for circular saw blades, scrapers, and clips. Hardened & tempered to HRC 55-60.
| ASTM A572 Grade 50 | C67E | |
|---|---|---|
| Material Number | — | 1.1231 |
| Category | Carbon Steel | Carbon Steel |
| Standard | ASTM A572 | EN 10132-4 |
Chemical composition (wt%)
| Element | ASTM A572 Grade 50 | C67E | Overlap |
|---|---|---|---|
| C | 0–0.23% | 0.65–0.72% | No overlap |
| Si | 0–0.4% | 0.15–0.35% | OK |
| Mn | 0–1.35% | 0.5–0.8% | OK |
| P | 0–0.04% | 0–0.025% | OK |
Mechanical properties
| Property | ASTM A572 Grade 50 | C67E | Unit |
|---|---|---|---|
| tensile_strength | ≥ 450 | 1150–1400 | MPa |
| yield_strength | ≥ 345 | 1000–1250 | MPa |
| elongation | ≥ 18 | 5–8 | % |
Compatibility Assessment
ASTM A572 Grade 50 and C67E have significantly different compositions (37% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is ASTM A572 Grade 50 the same as C67E?
ASTM A572 Grade 50 and C67E have a 37% composition overlap. They are generally not directly interchangeable.
Can I replace ASTM A572 Grade 50 with C67E?
Generally not recommended. The compositions differ significantly (37% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between ASTM A572 Grade 50 and C67E?
The main differences are in the following elements: C. ASTM A572 Grade 50 is a Carbon Steel grade, while C67E is a Carbon Steel grade.
Related Comparisons
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