Differences between EVA HDPE Rubber Railway Pads

In the railway track system, EVA rail pad, HDPE rail pad and rubber rail pad are all key components to ensure the stability of the track and the safe operation of the train. However, due to their different materials, there are significant differences in performance, application scenarios, etc.

From the basic characteristics, EVA rail pads are made of ethylene-vinyl acetate copolymer, and its density is usually 0.91-0.93g/cm³. It has good flexibility and resilience, and can effectively buffer the vibration and impact generated by the passing of trains. HDPE rail pads are made of high-density polyethylene, with a density of 0.941-0.965g/cm³, and have high strength, high rigidity, and excellent wear resistance and chemical corrosion resistance. Rubber rail pads are mainly made of natural rubber or synthetic rubber, with a Shore A hardness of 60-80 degrees, excellent elasticity, and outstanding shock and noise reduction effects.

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)

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)

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

Performance difference

 

In terms of performance, EVA railway pads have excellent buffering properties, can absorb a lot of energy, and can still maintain good flexibility in low temperature environments, but their wear resistance is relatively weak. HDPE railway pads have high strength, can withstand the pressure of heavy-load trains, and have good wear resistance, but their elasticity is not as good as rubber and EVA pads. Rubber railway pads have the best shock absorption and noise reduction effects due to their high elasticity. They can effectively reduce the impact of trains on tracks and surrounding environment during operation, and have good weather resistance and anti-aging properties.

Application  difference

 

Different performances determine their different application scenarios. EVA railway pads are often used in high-speed railways and urban rail transit with high shock absorption requirements and fast train running speeds, which can provide a smooth driving environment for trains. HDPE railway pads are suitable for heavy-load railways and freight railways. Due to their high strength and wear resistance, they can withstand frequent heavy-load impacts. Rubber railway pads are widely used in various types of railways, especially urban subway lines with strict noise control requirements and areas with high demand for track structure protection.

In terms of price, EVA railway pads are relatively expensive due to the material and production process; HDPE railway pads are moderately priced; rubber railway pads are relatively cheap due to the wide source of raw materials. When choosing railway pads, railway construction and operation departments need to comprehensively consider factors such as line type, train load, environmental conditions and cost, and make the most appropriate choice after weighing the pros and cons.

GNEE RAIL is a professional company focusing on international trade of railway fasteners, mainly supplying various types of rail fasteners, connecting bolts, elastic gaskets and other products. We have a stable production base and a professional quality inspection team to ensure that each batch of products meets international railway industry standards. After years of development, we have established a complete export service system, which can provide customers with full-process services from product selection, quality control to logistics and transportation.