What material is commonly used to make elastic rail clips?

A rail clip is a resilient steel fastener that locks the rail into position by storing elastic energy, ensuring stable fixation while protecting the track structure from impact damage caused by passing vehicles. It replaces rigid fasteners in modern high-performance track systems.

GNEE RAIL supplies rail clips for high-speed railway, metro, freight, and crane tracks, including SKL series, Nabla, Fast Clip, and E-type elastic clips, matched with GB, UIC, DIN, AS, and AREMA standards, and provides fastening system optimization and installation support services.

What material is commonly used to make elastic rail clips?
 

Elastic rail clips are commonly made from high-quality spring steel, which is a type of carbon–manganese steel specifically engineered to provide high elasticity, toughness, and fatigue resistance. The steel is heat-treated to achieve the required combination of strength and flexibility, enabling the clip to clamp rails firmly while allowing controlled elastic movement.

Key material characteristics include:

• High tensile strength: Typically in the range of 800–1200 MPa, allowing the clip to maintain clamping force over millions of load cycles without permanent deformation.

• Elasticity and spring behavior: The heat-treated spring steel can flex under load and return to its original shape, which is essential for absorbing vibration, impact, and thermal expansion in both railway and crane rail systems.

• Toughness and fatigue resistance: The material resists cracking and failure under repeated bending and dynamic forces.

• Corrosion resistance: Clips are often coated or treated with galvanization, black oxide, or other corrosion-protective finishes, particularly in coastal, humid, or industrial environments, to extend service life.

Common steel grades for elastic rail clips include:

• 65Mn or 60Si2Mn spring steel (high-carbon, high-manganese)

• 70Si2Mn for higher-load applications, such as heavy rail and crane rails

For industrial and crane rail systems, the clip section may be thicker and the spring force higher, but the material is still based on hardened spring steel to resist extremely high vertical and horizontal loads while maintaining elasticity.

Types of Elastic Rail Clip

Elastic rail clips, made of hot-pressed spring steel, are essential for fastening rails to sleepers, reducing vibration, and maintaining track gauge. Key types include E-series (E1609-E2056), SKL (1-14), Nabla, Fast-clip, and Russian-type clips, utilized in railway, metro, and crane applications, often paired with concrete sleepers and elastic pads.

GNEE RAIL as the largest rail clip and clamp production base in China, which has been qualified to tender medium and large scaled railway projects. In addition, GNEE RAIL is approved elastic rail clip manufacturer by China's Railway Ministry and has been ISO9001-2008 certified. Our rail clip product is ideal for rail track assembly for advantages of easy fitment while track laying; economical maintenance; long durability and lifespan; fast replacement.

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