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I believe that Nivacrom refers to both the model of Columbus fluted tubing and the material itself as there's a bit of a write up on the properties online:
"This is the most famous of Columbus' patented steels, specifically designed to make tubes for bicycle frames. It has the advantage over other steels of combining extremely high mechanical characteristics with great tenacity in the welding area. Alloy elements, vanadium and niobium, precipitate in the metal matrix blocking any grain growth and the resulting decline in mechanical characteristics, even at temperatures exceeding 1000C. It should be noted that, following the introduction of Nivacrom, the automobile industry began to use similar steels for producing bearing and reinforcement structures. Nivacrom though has been developed for top of the range competitive bicycle frame use."
Of course correct me if I'm wrong!
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Sam84
@Pawlus
Wasn’t Nivacrom a name for a steel alloy Columbus used to make specific tubesets? EL and Max (amongs others) were made out of it, as opposed to Cyclex, which was used to make older tubesets like SL and SLX.
Was Nivacrom a name used for both an alloy and a tubeset? Is yes, what alloy was used to make Nivacrom tubeset? :)