This article is within the scope of WikiProject Watches, a collaborative effort to improve the coverage of watches on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.WatchesWikipedia:WikiProject WatchesTemplate:WikiProject WatchesWatches articles
This article is within the scope of WikiProject Metal, a collaborative effort to improve the coverage of heavy metal music on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.MetalWikipedia:WikiProject MetalTemplate:WikiProject MetalHeavy Metal articles
This article is within the scope of WikiProject Metalworking, a collaborative effort to improve the coverage of Metalworking on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.MetalworkingWikipedia:WikiProject MetalworkingTemplate:WikiProject MetalworkingMetalworking articles
No. Invar has a very low coefficient of thermal expansion, its length stays very constant with temperature changes. Elinvar has a very low temperature coefficient of elasticity; its elasticity (springiness) stays very constant with temperature changes. The two metals are closely related; both are nickel-iron alloys discovered by Gillaume around the turn of the century, but they are used for different purposes. I have no objection to the proposed merger. --ChetvornoTALK06:36, 14 October 2011 (UTC)[reply]
Although this material was available commercially very early in the 20th century, it's not clear how it was being made. Nickel, iron, and chromium all have very high melting points, and it's not clear how this alloy was being made at that time. Vernuill? EAF? VIM? How about a "History of production" section?
