[metal_am]

A line has to be drawn somewhere because this is a rabbit hole. Without going into the specifics of ASTM standards, etc., there are metal AM parts flying today in both air and space. IMO, that counts as meeting standards.

[lazide]

But which standard, or even rough category means a lot.

Forged? Stamped? Die cast? Investment cast? Billet/machined?

Each of those has vastly different characteristics.