What type of stainless steel is used in the AJSGH100 Heavy Duty Steel Hose? The AJSGH100 Heavy Duty Steel Hose is made of SAE 304 Stainless Steel, a high-quality alloy that is known for its durability, lightweight properties, and resistance to corrosion, temperature, and puncture. Related articles What should I do when using my AJFJH100-PRO hose for the first time? What are the advantages of AJSGH100 SAE 304 Stainless Steel? What constitutes a "Heavy Duty Hose"? What's the best way to store my Garden Hose? Are the fittings on the AJSGH75 compatible with my existing irrigation accessories?