Considering the entire structure of the CBMM Desulphurization Plant II, it represented around 362,000 kg when designed with ASTM A36, but there was a total weight reduction of 22% when using ASTM A572 Gr. 50 instead. The price of these materials fluctuate according to market conditions, but currently, due to the presence of numerous, good quality suppliers, the price can be considered almost the same, being just a little higher for ASTM A572 Gr. 50. In this example, the use of the high strength steel resulted in costs savings directly proportional to the structure weight reduction, that represented 17% less in the building structure costs. In addition, this weight reduction also contributes to reductions in the foundations, welding consumables and transportation. Due to using less steel, there was a reduction around 140 t of CO2 emissions, representing 22% of total emissions for the steel structure. This reduction of CO2 emissions is totally in line with dematerialization, a very important concept used in construction in order to reach carbon neutrality targets.