As an important part of the railway track system, Rail Pad plays a key role in ensuring the safety and smooth operation of trains. At present, the mainstream Rail Pads are mainly made of rubber, EVA and HDPE, each of which has its own advantages.
Rubber Rail Pad is known for its high elasticity and can effectively absorb high-frequency vibrations during train operation. It is particularly suitable for high-noise sensitive areas such as urban subways; EVA Rail Pad has both flexibility and resilience, and performs well in high-speed railways and low-temperature environments. It can buffer the impact caused by high-speed driving and is not easily brittle due to cold; HDPE Rail Pad has become the first choice for heavy-duty railways and freight lines due to its high strength and wear resistance. It can withstand the huge pressure of heavy-duty trains and reduce the maintenance costs caused by frequent replacement.
HDPE
| Technical Parameter | Unit | Technical Requirement | Value |
| Density | g/cm3 | 0.95-0.98 | 0.95 |
| Tensile Strength | Mpa | ≥19 | 19 |
| Elongation | % | >80 | 150 |
| Melting Point | ℃ | 170-190 | 190 |
| Insulation Resistance | Ω | ≥1×1010 | 3.5 ×1010 |
| Hardness | A | ≥98 | 98(A) |
EVA
| Technical Parameter | Unit | Technical Requirement | Value |
| Density | g/cm3 | 0.95-0.98 | 0.95 |
| Tensile Strength | Mpa | ≥15 | 16 |
| Elongation | % | >500 | 550 |
| Melting Point | ℃ | 170-190 | 170 |
| Insulation Resistance | Ω | ≥1×1010 | 5.0 ×1010 |
| Hardness | A | ≥90 | 92(A) |
Rubber
| Technical Parameter | Unit | Value |
| Stiffness | KN | 90-130 |
| Hardness Shore A | ℃ | 72-80 degree |
| Electronic Resistance | Ω | ≥ 106 |
| Tensile Strength before Aging | Mpa | ≥12.5 |
| Elongation before Aging | % | ≥250 |
In practical applications, choosing the right Rail Pad material according to different railway scenarios and needs is the key to improving the performance and service life of the track system.