[aflagatopamoon]

This is called a pepper:

https://en.wikipedia.org/wiki/Pepper_(cryptography)

If you read the article above, you'll see that you still need a salt, since users with very simple passwords will have the same hash: crack one, and you can crack the others for free.

[bglusman]

Yeah I should have been clear this wasn't for passwords at all, ever, this was/is only for other kinds of PII