Dear All,
It seems that venerable Columbus Zona has been downgraded from Nivacrom to 25CrMo4.
Putting mechanical characteristics side by side there seems to be a difference in numbers.
Alloy Breaking load Yield load Elongation
====================================
Nivacrom 1200 N/mm2 1030 N/mm2 12%
25CrMo4 800 N/mm2 760 N/mm2 12%
I have some questions for the eminent frame builders of the forum:
i) what has motivated the change? Nivacrom was the most famous Columbus' patented steels
ii) is the change motivated to increase the gap and draw demand towards Niobium alloy steel?
iii) does this mean that to get a proper Nivacrom frame, one has to rely on previous generation stock of Zona?
iiii) any experience/thoughts on how 25CrMo4 compares to Nivacrom from a ride perspective?
v) in your opinion, is the difference in price between Zona and Niobium justified, performance wise?
I hope you find this thread relevant.
Many thanks to all for your insightful comments.
All the best.
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