The rails cut in the videos I show are not "ordinary" steel. They are the steel used to make rails.
What is the exact alloy used in these magical new rails, likely used only in the DR, and only able to be cut with alien technology and what is the Brindle hardness number of these rails?
Harder than 400 HB?
The rails you see in your posts are NOT what's used today in hybrid rail systems.
These are from old rails that were either abandoned, disposed or beyond their utility and safety service life.
Today's hybrid rails are made with a higher mix of strong alloys, more so when they will be used to transport double decker cargo containers.
Rail technology has changed greatly in the last decade than all the time since introduced to that point.
Two long standing factors (amid the rest of others) that have always made the rail technology remain unchanged for so long (tensile strength and temperature) have been addressed with the use of space age alloys.
These alloys are less than a decade old and since introduced are only economically feasible in hybrid rail systems.
To use a torch on them and say that they will give way just like the older rails, it's like saying that you can also waste no time in splitting the thermal tiles from what used to be space shuttles, just like any other materials before it.
Same thing for the alloys used on the heat shields of re entry space capsules like the ones used by the Russian space program.
Alloys are very expensive and new.
Japan was the first country to introduce the new hybrid rail alloy, when they upgraded a line of their existing high speed system used by bullet trains to test their maglev version.
The rails are exactly what is now used in Europe and in some extent, China's new high speed train system.
China couldn't get the technology patents to manufacture their own, so they bought some from Japan and then went about trying to copy some of the metallurgy tech behind them, without much success. Some moderate at best.
The alloy for the hybrid rails is only shared by the main protagonists in the international space station program, from which the alloy's tech was created and tested.
If you were to employ those rails in your video and pictures on the new high speed hybrid systems, they would fail after just a few months of traffic.
Metaldom will be able to mill the steel for the rails due to Gerdau's parent company access to the said hybrid rail alloy both in Brazil and their Spain markets.
Gerdau and Metaldom are still in the process of upgrading the DR steel operations.
Hope that clears it a bit for you.
And no, no reardon metal...