3 ms·
Are there alloys that don’t have this level of thermal expansion/contraction that could be used instead?
by ericd 8y ago
Are there alloys that don’t have this level of thermal expansion/contraction that could be used instead?
- joezydeco 8y agoThere 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.
- sebazzz 8y agoOr add perhaps gaps of 1 cm? Or would that cause wear and tear, or dangerous situations?