The framing is metal but what else is planned? How big is the deck how high off the ground so many items not given . I have no idea how much yours will cost but I did Google metal framing for decks and there are many choices .

@Patricia Colwell Consulting

There will be several decks--the primary one will be elevated about 12 feet off the ground and the other (2) less than 2 feet off the ground. The primary deck is 10'8 x 16'; we plan on composite (class A fire rated) decking boards and metal railing. The goal is to make the deck as fire resistant as possible. Could potentially go with galvanized steel framing but would like to know if there are competitors to the Fortress Evolution product.

Check with your building Department inspectors for options.