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Yes it was stronger but fragile and less durable.

Iron was mostly perfected by Romans through their conquests as they collected and systemised iron processing tech of the nations they conquered, which all entered Iron Age by then. By the times of early Roman Empire, high quality iron spread around enough to make bronze obsolete.

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IIRC there were significant improvements in the early and mid “dark ages” and mass produced Roman steel was generally quite poor by medieval standards.

I think the main benefit of bronze and it still existed in Roman times is that you can cast it instead of forging. It took almost two thousand years to figure out how to make steel cuirasses that resembled the bronze ones Greeks used before the classical period. Of steel chainmail or scale armor was already superior anyway.

"High quality iron" is called steel.

It is debatable on which of those materials could in fact be called "steel", many of them were not. But indeed, deliberately carburised iron - that is, steel, appeared in Greece around 800BC and became a comparatively common and in general worthwhile material by the Classic Period.

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