Sun and Steel is the sixth and final album released by Iron Butterfly in 1975. It explores a wider variety of styles than any other Iron Butterfly album, yet always remains within the contemporary conventions of hard rock, aside from a foray into progressive rock on "I'm Right, I'm Wrong." This album is usually ignored on Iron Butterfly compilations/greatest hit collections.
Allmusic's Stephen Thomas Erlewine delivered a negative review of Sun and Steel, rating it one out of five stars. He said it "was an outright disastrous attempt at reshaping the band's signature sound to '70s hard rock conventions, lacking even the curiosity value of Scorching Beauty."