Should I get a metal urn If I am going to store them in a family columbarium?

My father recently died, and I want to fulfill his final wishes to be cremated. My family values tradition and wishes his ashes to be interred in our columbarium. We've been debating as a family which urn material would be best for storing his ashes for future generations. Should we get a metal urn to keep his cremains safe for as long as possible?