Rail Shoulders
Rail shoulders are vital components of railway track systems, serving to maintain the lateral position and alignment of the rails. Positioned on either side of the rail base, adjacent to the rail foot, these shoulder-shaped pieces are typically made of cast iron or steel.
The primary function of rail shoulders is to provide lateral support to the rails, preventing them from shifting or moving sideways under the weight of passing trains. By distributing the load from the rails to the sleepers or ties more evenly, rail shoulders help reduce stress on the track components, thus extending their lifespan.
Main Material Technical Parameter of Cast in Rail Shoulders
| Material | Tensile Strength(Mpa) | Yield Strength(Mpa) | Elongation(%) |
| QT400-15(GGG40) | 400 | 250 | 15 |
| QT450-10(GGG45) | 450 | 310 | 10 |
| QT500-7 (GGG50) | 500 | 320 | 7 |
Material Chemical Composition〔%〕of Cast in Rail Shoulders
| Material | C | Si | Mn | P | S |
| Qt450-10 | 0.6-3.6 | 3.0-3.2 | 0.5 | 0.07 | 0.02 |
| QT400-15 | 3.4-3.9 | 3.7-3.0 | 0.5 | 0.07 | 0.03 |
| QT500-7 | 3.4-3.8 | 2.5-2.9 | 0.5 | 0.08 | 0.025 |