What kind of steel is used in the Aqua Joe AJSGH25-MAX hose? The Aqua Joe Heavy Duty Steel Hose is made of SAE 304 stainless steel, a type of steel that is known for its durability, lightweight properties, and resistance to corrosion, temperature, and puncture. Related articles Is the Aqua Joe AJSGH25-MAX hose compatible with my existing irrigation accessories? Can I Use Disinfectant with this Chemical Sprayer? What size screws do I need to assemble my SPX3000®? For the first time, how should I use my AJFJH25-58-MAX hose?