11SMnPb30 vs S690QL: 24% composition overlap. Significantly different materials serving different application areas.
11SMnPb30 vs S690QL
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.
S690QL
1.8928
High-strength quenched and tempered fine-grain structural steel with minimum yield strength of 690 MPa. Used for heavily loaded structures like mobile cranes, mining equipment, bridges, and pressure vessels.
| 11SMnPb30 | S690QL | |
|---|---|---|
| Material Number | 1.0718 | 1.8928 |
| Category | Carbon Steel | Carbon Steel |
| Standard | EN 10087 | EN 10025-6 |
Chemical composition (wt%)
| Element | 11SMnPb30 | S690QL | Overlap |
|---|---|---|---|
| C | 0–0.14% | 0–0.2% | OK |
| Si | 0–0.05% | 0–0.8% | OK |
| Mn | 0.9–1.3% | 0–1.7% | OK |
| P | 0–0.11% | 0–0.02% | OK |
Mechanical properties
| Property | 11SMnPb30 | S690QL | Unit |
|---|---|---|---|
| tensile_strength | 460–710 | 770–940 | MPa |
| yield_strength | ≥ 375 | ≥ 690 | MPa |
| elongation | ≥ 8 | ≥ 14 | % |
Compatibility Assessment
11SMnPb30 and S690QL have significantly different compositions (24% 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 S690QL?
11SMnPb30 and S690QL have a 24% composition overlap. They are generally not directly interchangeable.
Can I replace 11SMnPb30 with S690QL?
Generally not recommended. The compositions differ significantly (24% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 11SMnPb30 and S690QL?
The main differences are in the following elements: S. 11SMnPb30 is a Carbon Steel grade, while S690QL 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.