SS 304 (Austenitic Stainless Steel – Grade 304) Stainless Steel 304, also referred to as Grade 304, is the most common and versatile form of austenitic stainless steel. It is renowned for its outstanding corrosion resistance, non-reactive surface, and ease of fabrication, making it suitable for both industrial systems and consumer products. The alloy's composition, featuring 18% chromium and 8% nickel, allows it to withstand oxidation and moderate acids. It remains non-magnetic when annealed and offers reliable mechanical strength, making it well-suited for applications requiring cleanliness, durability, and resistance to moisture. Core Features: High resistance to oxidation and mild chemicals Maintains strength at low and moderately high temperatures Easily fabricated via forming, machining, and welding Retains non-magnetic nature after annealing Compliant with global hygiene and food-grade standards Chemical Composition: Element Proportion (%) Cr (Chromium) 18.0 – 20.0 Ni (Nickel) 8.0 – 10.5 C (Carbon) ≤ 0.08 Mn (Manganese) ≤ 2.00 Si (Silicon) ≤ 1.00 P (Phosphorus) ≤ 0.045 S (Sulfur) ≤ 0.030 Mechanical Characteristics: Property Value Yield Strength ≥ 205 MPa Ultimate Tensile Strength ≥ 515 MPa Elongation ≥ 40% Brinell Hardness ≤ 201 HB Temperature Tolerance Up to 870°C Typical Applications: Food-grade kitchen and processing equipment Storage vessels in chemical industries Architectural railings and cladding Water and chemical piping systems Sanitary and pharmaceutical-grade machinery Conclusion: SS 304 combines aesthetic finish, corrosion protection, and hygienic standards to serve as a reliable and cost-efficient material. It is widely preferred in both structural and sanitary applications, making it the stainless steel industry’s most trusted grade.