What is the hardness and fatigue life of the E2006 railway clip?
The E2006 railway clip is typically made of spring steel such as 60Si2MnA or 60Si2CrA, with a hardness of approximately 44–48 HRC. Its fatigue performance is commonly specified as at least 3 million cycles for Ø18 mm clips and 5 million cycles for Ø20 mm clips, without fracture under the specified test conditions.
Material Basis for Hardness Performance
The stable 44-48HRC hardness of the e2006 rail elastic clip comes from its high-quality spring steel material and precise heat treatment process. The E2006 rail clip is typically made of 60Si2Mn, and can also be produced with other common E-clip spring steel grades including 60Si2MnA, 60Si2CrA, 55Si2Mn and 38Si7 according to project requirements. Each material grade has strictly controlled chemical composition ranges, which lay a foundation for the clip to reach the specified hardness index after quenching and tempering processes.
| Part Name | Type | Material | Surface | Remark |
| E clip | Dia. 16mm,Dia. 18mm,Dia. 20mm | 60Si2MnA,60Si2CrA,55SiMn | Plain oiled,color painting,or the other custom finish. | Hardness: 44-48HRC Toe Load: 500-700kgf for Dia.16mm, 750-900kgf for Dia.18mm, 1100-1400kgf for Dia.20mm Fatigue life:3 millions cycles without breaking for Dia.18mm, 5 millions cycles without breaking for Dia.20mm Standard: DIN17221, BS970,GB/T1222 |
This hardness range is carefully designed to balance strength and toughness: if the hardness is too high, the clip will be brittle and prone to fracture under impact load; if the hardness is too low, it will easily deform permanently and lose its elastic clamping force. The 44-48HRC interval ensures that the elastic e2006 rail clip can maintain stable clamping force during long-term service, and will not fail prematurely due to wear or deformation.
Fatigue Life and Engineering Application Adaptability
The fatigue life of the E2006 railway clip is closely related to its bar diameter, which is a key performance index reflecting its long-term service reliability under repeated dynamic loads. For the 18mm diameter E2006 rail clip, its fatigue life reaches 3 million cycles without breaking, which is suitable for light-load railway lines such as industrial sidings and port terminal tracks. For the 20mm diameter variant, the fatigue life is as high as 5 million cycles without breaking, which can meet the stringent requirements of heavy-haul routes, mainline railroad tracks and high-speed rail lines with frequent train passages and large dynamic loads.
As an important part of the E-clip fastening system, the E2006 railway clip works with shoulders, rail pads and insulators to provide stable elastic clamping for rails. Its excellent fatigue performance means it can withstand repeated vibration and impact caused by train operation for a long time, reducing the frequency of maintenance and replacement, and effectively lowering the full-life cost of railway track systems.
| Item included | Quantity | Material | Size | Remark |
|---|---|---|---|---|
| E clip | 2 | 60Si2MnA, 60Si2CrA | Dia. 16mm,18mm or 20mm (E1809, E2006,E2007,E2009,etc | Hardness: 44-48HRC |
| Toe Load: Dia.16mm: 500-700kgf; Dia.18mm:750-900kgf; Dia.20mm:1100-1400kgf | ||||
| Fatigue life: 5 millions cycles without breaking | ||||
| Standard: DIN17221, BS970, GB/T1222 | ||||
| Shoulder | 2 | QT500-7, QT450-10 | For UIC54, UIC60, 115RE, BS80lbs, BS100lbs, 50kg rail, 60kg rail, etc. | Note: Hardness of E-clip is 44-48HRC; Toe Load for E-clip is 500-700kgf (Dia.16mm); 750-900kgf(Dia.18mm); 1100-1400kgf(Dia.20mm); Fatigue life of E-clip is 5 millions cycles without breaking DIN17221, BS970, GB/T1222 qualified E-clip |
| Rail pad | 1 | HDPE, rubber or EVA | ||
| Insulator | 2 | Reinforced Nylon 66 (PA66) |
GNEE RAILWAY RAILWAYL supplies not only individual E2006 rail clips but also full sets of E-clip fastening system components, all under unified quality control to ensure perfect compatibility between parts, helping buyers realize one-stop procurement and avoid matching problems caused by purchasing from multiple suppliers.
FAQ
- What is the standard hardness of the E2006 railway clip?
The standard hardness of the E2006 railway clip is 44-48HRC, which is achieved through precise heat treatment of high-quality spring steel. This hardness range balances the strength and toughness of the clip, ensuring stable elastic clamping force and long-term wear resistance during service.
- How long is the fatigue life of the E2006 rail clip?
The fatigue life of the E2006 rail clip varies with its bar diameter: the 18mm diameter variant can withstand 3 million cycles without breaking, while the 20mm diameter variant can reach 5 million cycles without breaking. This index reflects the reliable service performance of the clip under repeated dynamic train loads.
- What materials are used to produce the E2006 rail elastic clip?
The E2006 rail elastic clip is typically made of 60Si2Mn spring steel, and can also be produced with 60Si2MnA, 60Si2CrA, 55Si2Mn or 38Si7 according to specific project requirements. Each material grade has strictly controlled chemical composition to ensure the clip meets the specified hardness and fatigue performance.
- Can the E2006 railway clip be used in heavy-haul railway lines?
Yes, the 20mm diameter E2006 railway clip with a fatigue life of 5 million cycles without breaking is fully suitable for heavy-haul routes, mainline railroad tracks and other high-load application scenarios. Its stable elastic clamping force can effectively maintain rail alignment and reduce track maintenance frequency.
- What surface treatment options are available for the E2006 rail clip?
Common surface treatment options for the E2006 rail clip include plain oiled, black oxide, zinc and hot dip galvanized, which can meet different anti-corrosion requirements in various service environments. Customized surface treatment schemes can also be provided according to buyers' specific needs.
