The range of alloys used is stunning: weathering steel for aging, marine-grade aluminum for weight savings

https://emiliojnwz893.almoheet-travel.com/dormers-that-don-t-deceive-the-100-year-performance-of-custom-made-copper-by-salvo-metal-works

The range of alloys used is magnificent: weathering steel for patina, marine-grade light weight aluminum for weight cost savings, and duplex stainless for rust resistance in extreme climates.