Material

• Aluminum resists corrosion and tarnishing, and is lightweight.
• Brass is corrosive resistant, ductile at high temperatures, and has a low magnetic permeability.
• Iron is strong, malleable, and ductile, and has high magnetic permeability. Cast iron, which is iron alloyed with carbon, is brittle, less ductile than iron, and must be cast in a mold.
• Perfluoroalkoxy (PFA) is chemically inert, has high strength, and can be used at a higher working temperature than most plastics.
• Polyvinyl chloride (PVC) is corrosion resistant and lightweight, and has high strength. It resists reactions with acids, gasoline, alcohol, and hydrocarbons.
• Stainless steel resists scaling and corrosion.
• Stainless steel 304 is corrosion resistant and withstands high temperatures.
• Stainless steel 304L is a low carbon version of stainless steel 304, with slightly less tensile strength.
• Stainless steel 316 has more corrosion resistance than stainless steel 304 because molybdenum has been added to the alloy. It may have slightly higher magnetic permeability than stainless steel 304. Sometimes 316 is called "marine grade stainless steel" due to its resistance to chloride corrosion.
• Stainless steel 316L is the low carbon version of stainless steel 316.
• Steel is a general purpose material with better weldability and more rust resistance than iron.