B370 will naturally patina with age.
Copper sheet astm b 370.
Astm b370 2019 edition 2019 standard specification for copper sheet and strip for building construction this specification establishes the requirements for rolled copper sheet and strip in flat lengths or coils in ounce weight thicknesses for roofing flashing gutters downspouts and general sheet metal work in building construction.
Astm b370 is commonly referred to as other brand names or as roofing copper.
B370 is popular for its appearance and ease of working machining.
Copper sheet astm b370 also known as roofing copper provides high ductility durability and corrosion resistance.
It will develop a green patina with time.
Astm b 370 09 specification for cold rolled copper sheet and strip for building construction pdf download item.
Different manufacturers may give different alloy numbers as part of their efforts to brand their product but don t let that confuse you.