Stainless steel is another material that has a high rust resistance and corrosion resistance. 316L stainless steel is a material that has a low price point, compared to stainless steel when it is high in pressure, humidity, and corrosion resistance.
Stainless steel is more affordable, 4304 stainless steel is affordable, 4304 stainless steel has a low price point, 4304 stainless steel is a stronger materials than aluminum and but not able to withstand high heat.