Cast Iron vs. Steel Rail Shoulder Comparison
May 24, 2025
Comparison
| Feature | Cast Iron Rail Shoulder | Steel Rail Shoulder |
|---|---|---|
| Strength | High compressive strength, but brittle under impact | Higher tensile strength, more durable under dynamic loads |
| Wear Resistance | Good, but may crack under heavy cyclic loads | Superior, especially heat-treated steel (e.g., 60HRC hardness) |
| Corrosion Resistance | Moderate (requires coatings) | Better (stainless steel options available) |
| Cost | Lower initial cost | Higher, but longer lifespan reduces lifecycle cost |
| Applications | Light to medium rail traffic | Heavy haul, high-speed, and high-stress tracks |
Best Choice?
Cast Iron: Suitable for low-speed tracks with minimal impact loads.
Steel: Preferred for heavy haul, high-speed, and curved tracks due to fatigue resistance.
