11SMnPb30 vs C67S: 5% composition overlap. Significantly different materials serving different application areas.
11SMnPb30 vs C67S
Side-by-side chemical composition and mechanical property comparison.
Overview
11SMnPb30
1.0718
Leaded free-cutting steel — the highest machinability rating among carbon steels. Pb+S combination gives excellent chip breaking and surface finish. The standard grade for high-volume automatic lathe parts. Used for screws, nuts, bolts, bushings, pins, and automotive turned parts. ≈ AISI 12L14.
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.
| 11SMnPb30 | C67S | |
|---|---|---|
| Material Number | 1.0718 | 1.1231 |
| Category | Carbon Steel | Carbon Steel |
| Standard | EN 10087 | EN 10132-4 |
Chemical composition (wt%)
| Element | 11SMnPb30 | C67S | Overlap |
|---|---|---|---|
| C | 0–0.14% | 0.65–0.72% | No overlap |
| Si | 0–0.05% | 0.15–0.35% | No overlap |
| Mn | 0.9–1.3% | 0.5–0.8% | No overlap |
| P | 0–0.11% | 0–0.025% | OK |
Mechanical properties
| Property | 11SMnPb30 | C67S | Unit |
|---|---|---|---|
| tensile_strength | 460–710 | 1200–1500 | MPa |
| yield_strength | ≥ 375 | 1050–1300 | MPa |
| elongation | ≥ 8 | 5–8 | % |
Compatibility Assessment
11SMnPb30 and C67S have significantly different compositions (5% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 11SMnPb30 the same as C67S?
11SMnPb30 and C67S have a 5% composition overlap. They are generally not directly interchangeable.
Can I replace 11SMnPb30 with C67S?
Generally not recommended. The compositions differ significantly (5% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 11SMnPb30 and C67S?
The main differences are in the following elements: C, Si, Mn, S. 11SMnPb30 is a Carbon Steel grade, while C67S is a Carbon Steel grade.
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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.