9SMnPb28 vs S355ML: 63% composition overlap. Moderate differences, generally not direct substitutes.
9SMnPb28 vs S355ML
Side-by-side chemical composition and mechanical property comparison.
Overview
9SMnPb28
1.0718
Leaded free-cutting steel — Pb (0.15-0.35%) + S (0.24-0.33%) for maximum machinability. THE ultimate Automatenstahl: machinability rating ~175% (vs 100% for 11SMn30). Pb acts as chip-breaker and tool lubricant. Used for high-speed automatic screw machine production of screws, nuts, fittings, bushings, and any part where surface finish and cycle time matter most. NOTE: Pb content being phased out under EU ELV/RoHS — replacement grades emerging.
S355ML
1.8834
Thermomechanically rolled fine-grain structural steel — ReH >=355 MPa with Charpy at -50°C (KV >=27J). THE workhorse for large welded steel structures in cold environments. TM rolling = low CEV = excellent weldability even in thick plate. Used for offshore platforms, wind turbine towers, bridges, crane structures, and pressure vessels. Most common TM grade by tonnage.
| 9SMnPb28 | S355ML | |
|---|---|---|
| Material Number | 1.0718 | 1.8834 |
| Category | Carbon Steel | Carbon Steel |
| Standard | EN 10087 | EN 10025-4 |
Chemical composition (wt%)
| Element | 9SMnPb28 | S355ML | Overlap |
|---|---|---|---|
| C | 0–0.14% | 0–0.14% | OK |
| Si | — | 0–0.5% | — |
| Mn | 0.9–1.3% | 0–1.6% | OK |
| P | 0–0.06% | — | — |
Mechanical properties
| Property | 9SMnPb28 | S355ML | Unit |
|---|---|---|---|
| tensile_strength | 370–500 | 450–610 | MPa |
| yield_strength | 230–300 | ≥ 355 | MPa |
| elongation | 14–22 | ≥ 22 | % |
Compatibility Assessment
9SMnPb28 and S355ML have moderate differences (63% overlap). They are generally not direct substitutes. Consider the specific requirements of your application.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 9SMnPb28 the same as S355ML?
9SMnPb28 and S355ML have a 63% composition overlap. They are generally not directly interchangeable.
Can I replace 9SMnPb28 with S355ML?
Generally not recommended. The compositions differ significantly (63% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 9SMnPb28 and S355ML?
The main differences are in the following elements: overall alloying content. 9SMnPb28 is a Carbon Steel grade, while S355ML 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.