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Fe 6 double coil spring washer is commonly used in the railway fastening system. The hardness of it is 43~49 HRC, and the height should be more than 17.8mm after compression force of 40KN sustained for 10 seconds.
For Fe 6 washers production, material of 65Mn and 60Si2Mn are used, and each occupies nearly 50% of the market. 82B is suitable for super cold temperature districts. In some former USSR countries including Baltic countries, the material of this spring washer is 40С2А. And for some super requirments to meet, 38Si7 is a better choice for raw material.
Below are some normal dimensions of railway spring washers that widly used on railway fastening.
For many years,the double coil spring washers were some of our most popular production items. These washers are generally used for railway applications, thanks to their unique geometry which prevents the rail loosening from the railroad ties.
For other than Fe6 spring washers, we can supply different kinds of spring washers, including single heavy lock washer, double coil spring washers, triple helical spring washers and multiple spring washers.
And you may see the Fe 6 double coil spring washer on KPO rail fastening system, as the below pictures showing:
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