What is the elongation of Rail Rubber Pads?
The elongation of rubber rail pads varies depending on the material and specific application, but it generally falls in a wide range, from over 200% to 800%. For instance, some composite rubber pads require an elongation of over 250% at break, while certain natural rubber pads have an elongation at break between 100% and 800%. This property is crucial for absorbing shock and vibration by allowing the material to stretch significantly before breaking.
| Rubber Rail Pad | ||
| 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 |
- Composite Rubber Pads: A common requirement is an elongation of >250% at break, which can decrease to >200% after aging.
- Natural Rubber Pads: Some sources indicate a range of 100% to 800% for elongation at break, depending on the specific grade and formulation.
- EVA and HDPE pads: While these are technically plastics and not rubber, they are often used in similar applications. Their elongation values are different, with EVA sometimes at >500% and HDPE at >80%.
| HDPE Rail Pad | |||
| 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: Polyethylene 80%, Vinyl Acetate 20%. | |||
| 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) |
- General definition of elongation: Elongation is the percentage of stretch a material can undergo before it breaks, calculated as the change in length divided by the original length, multiplied by 100. A 100% elongation means the material can double its length before breaking.
As a professional rail fastener manufacturer, GNEE RAIL can produce various types of rubber rail pads with different materials, such as natural rubber, EVA, HDPE and so on. Our EVA/HDPE/rubber rail pads are with high elasticity, applying to types for rails such as rail UIC54, UIC60, BS80lbs,BS100lbs, and sizes as ordered. The pads can be customized with or without grooves, in various possible designs, depending on customers' requirements.
