Why does the rail of the train not use stainless steel?

Edit:Zongxiang Heavy Industry--Lucas Date:2020-04-06 08:43:43

Train track is the established running track of the train and is an indispensable mode of railway technology.  Everyone should have noticed that basically all the railway tracks are rusty, even the newly built railway tracks are like this.  Rusted iron products will become very fragile if their service life is shortened.  Then why does the rail of the train not use stainless steel but rusty iron? railway track material

Why can such steel products still be used in such important traffic construction?  Can't stainless steel rails be used directly?  Using stainless steel not only looks beautiful, but also feels safer and more reliable.  However, railway construction is still the most suitable for this rusty railway. Stainless steel is not as good as it is.

At present, high manganese steel is often used in railway transportation construction. This material contains more manganese and carbon than ordinary steel, which increases the hardness and toughness of the rail to a certain extent and can withstand the high pressure of trains and the friction loss of wheels in daily operation. railway track material

The reason why stainless steel is not used is that its resistance is easily damaged under thermal expansion and cold contraction.  Under the daily wind, rain and sun exposure, stainless steel can be easily damaged.  Although this kind of high-powered rail looks rusty, it only has a layer of rust on its surface and its interior is still intact.

Through the introduction of the above article, we should be able to understand why railway rails use "rusty" iron products? railway track material

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