Bronze keris ?

[A. G. Maisey]

Pusaka, the Asuras are mythological beings.

They exist in myth, not in reality.

Yes, they are mentioned in old Indian texts, including the Vedas, and most especially in the Samhitas, the oldest part of the Vedas. In the Samhitas the word "Asura" is used to describe any sort of spirit being, whether good or bad.

The Asuras were not real, living, breathing people, and they did not have any civilisation.

The Sanscrit word "ayas" has many meanings, dependent upon context. One of those meanings is "iron".

However, the word "ayas" is in no way related to the word "Aryan"

When the Aryans entered India they referred to themselves as "The Noble Ones":- the "Arya" in Sanscrit.

The words "arya" --- "noble" + a whole heap of similar derivatives, and "ayas" --- many different meanings dependent on context, have no relationship at all.

The Aryans did not discover iron technology, but they sure made use of it.