Which material of Rail Pad has the longest service life?

 

Composite and advanced polymer rail pads, such as those made with polyurethane or engineered plastics, generally have a longer service life than traditional rubber pads, especially under extreme temperatures and high loads. Innovations in polymer science have led to longer-lasting, more resilient pads that can withstand harsh conditions, while composite and high-density polyethylene pads have demonstrated exceptional durability in testing.

 

 

Composite and advanced polymer rail pads

 

 

• Long-lasting: These materials are engineered to have a longer service life, with some studies showing they can retain stiffness for decades.

 

• Durable: They are resistant to extreme temperatures, UV radiation, and moisture, which are common causes of degradation for other materials.

 

• Examples: Polyurethane and engineered polymers like high-density polyethylene are known for their longevity and reliability.

 

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)

 

Traditional rubber rail pads

 

• Shorter lifespan: Rubber pads may wear out faster, particularly in harsh weather conditions.

 

• Good for some applications: They are still a viable option due to their low cost and good elasticity for vibration absorption, making them suitable for many urban and high-speed rail lines.

 

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

 

What to consider

 

• Application: The best material depends on the specific application. For maximum longevity in harsh conditions or for high-speed lines, composite or advanced polymers are often preferred.

 

• Cost: Rubber is typically cheaper, while advanced materials may have a higher initial cost but lead to lower long-term maintenance costs.

 

• Performance: For critical applications, look for materials that meet specific stiffness and durability requirements, often outlined in product specifications.

 

 

As a professional rubber rail pad manufacturer GNEE RAIL can produce various standards of rubber rail pads and other rail fasteners. If you want to build a railway line, do not hesitate to contact us, we can supply all types of rubber rail pads with different materials. If necessary, we can make customized rubber rail pad production.

 

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