I' m happy to dissent, as they distinctly are not, and you won' t find " steel" listed on any periodic table of elements. A cast deep dish pizza pan certainly can benefit from a crusty seal-- it takes a while at 500 degrees to do it. The pores in 4140 and other GBQ steels are microscopic, no " seasoning" can take place, and that is why you' ll not find the people that care the most about their metal, such as the military, subscribing to its use.