3 ms·
There are, but the cost of building thousands of miles of rails out of it would be incredibly prohibitive.
by joezydeco 8y ago
There are, but the cost of building thousands of miles of rails out of it would be incredibly prohibitive.
- ericd 8y agoAh yep, I meant alloys that are reasonable to use for rail, including cost restrictions. I had heard that the TGV has welded rails rather than expansion gaps, which necessitated a low-thermal-expansion alloy. But I don't anything about it beyond that.