C35 vs C67S: 43% composition overlap. Significantly different materials serving different application areas.
C35 vs C67S
Side-by-side chemical composition and mechanical property comparison.
Overview
C35
1.0501
Medium-carbon unalloyed steel with moderate strength. Good machinability and weldability. Used for lightly stressed components like levers, axles, bolts, and general machine parts.
C67S
1.1231
Unalloyed cold-rolled spring strip steel — THE standard flat spring material. 0.65% C gives high hardness after hardening (HRC 60+). Very good fatigue properties when properly heat-treated. Much cheaper than alloyed spring steels (51CrV4, 55Cr3). Used for flat springs, circlips/snap rings, saw blades, scrapers, reed valves, and leaf springs in small dimensions.
| C35 | C67S | |
|---|---|---|
| Material Number | 1.0501 | 1.1231 |
| Category | Carbon Steel | Carbon Steel |
| Standard | EN 10083-2 | EN 10132-4 |
Chemical composition (wt%)
| Element | C35 | C67S | Overlap |
|---|---|---|---|
| C | 0.32–0.39% | 0.65–0.72% | No overlap |
| Si | 0–0.4% | 0.15–0.35% | OK |
| Mn | 0.5–0.8% | 0.5–0.8% | OK |
| P | 0–0.03% | 0–0.025% | OK |
Mechanical properties
| Property | C35 | C67S | Unit |
|---|---|---|---|
| tensile_strength | 550–700 | 1200–1500 | MPa |
| yield_strength | ≥ 300 | 1050–1300 | MPa |
| elongation | ≥ 18 | 5–8 | % |
Compatibility Assessment
C35 and C67S have significantly different compositions (43% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is C35 the same as C67S?
C35 and C67S have a 43% composition overlap. They are generally not directly interchangeable.
Can I replace C35 with C67S?
Generally not recommended. The compositions differ significantly (43% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between C35 and C67S?
The main differences are in the following elements: C. C35 is a Carbon Steel grade, while C67S is a Carbon Steel grade.
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.