SS 316 / A-4-70 Bolts and Fasteners SS 316, also known as A-4-70, is a type of stainless steel that is commonly used in manufacturing bolts, fasteners, and various other hardware components. It is known for its excellent corrosion resistance, high strength, and ability to perform well in harsh environments. SS 316 is an austenitic stainless steel that contains molybdenum, which gives it enhanced resistance to pitting and crevice corrosion, particularly in chloride environments. Composition of SS 316 / A-4-70 Bolts and Fasteners The chemical composition of SS 316 stainless steel typically includes: Chromium (Cr): 16–18% Nickel (Ni): 10–14% Molybdenum (Mo): 2–3% Manganese (Mn): 2% Silicon (Si): 1% Carbon (C): ≤ 0.08% Phosphorus (P): ≤ 0.045% Sulfur (S): ≤ 0.03% The addition of molybdenum (Mo) in SS 316 provides its superior resistance to corrosion in aggressive environments, particularly against chlorides, which is a critical feature in marine, chemical, and food processing industries. Uses of SS 316 / A-4-70 Bolts and Fasteners SS 316 bolts and fasteners are used in applications where high strength, corrosion resistance, and durability are required. Some of the common uses include: Marine Industry: Due to its resistance to saltwater corrosion, SS 316 fasteners are used in shipbuilding, offshore oil rigs, and other marine applications. Chemical Processing: The resistance to aggressive chemicals and acids makes SS 316 ideal for use in reactors, heat exchangers, and piping systems in chemical plants. Food and Pharmaceutical Industry: SS 316 is used in manufacturing equipment, storage tanks, and fasteners in food and pharmaceutical industries due to its resistance to corrosion and ease of cleaning. Construction: It is commonly used in architectural structures, especially for external fastenings, due to its aesthetic and rust-resistant qualities. Power Generation: In power plants, particularly nuclear and fossil fuel plants, SS 316 is used for critical bolts and fasteners that must withstand extreme conditions. Sizes and Lengths of SS 316 / A-4-70 Bolts and Fasteners SS 316 bolts and fasteners come in various sizes and lengths to accommodate different applications. They are typically available in the following specifications: Bolt Sizes: From M3 to M100 or larger, with different thread pitches (fine and coarse). Length: Bolt lengths can range from a few millimeters to several meters, depending on the specific application. Grades: SS 316 bolts are available in various grades and classes, such as A4-70, A4-80, and others, where the number (e.g., 70) refers to the tensile strength of the fastener in megapascals (MPa). Threading: Standard threading for SS 316 bolts includes both metric (M) and imperial (UNC, UNF) threads. Diameter: The diameter of the bolts can vary from small (e.g., M3) to larger sizes like M30 or M100 depending on the application and load-bearing requirements. SS 316 bolt suppliers A-4-70 stainless steel fasteners SS 316 / A-4-70 bolts manufacturers 316 stainless steel bolts supplier A-4-70 stainless steel bolts manufacturers Corrosion-resistant SS 316 fasteners SS 316 bolts for marine industry Stainless steel A-4-70 bolts Buy SS 316 bolts online High-strength SS 316 bolts supplier 316 stainless steel fasteners distributor A-4-70 stainless steel bolt suppliers Custom SS 316 fasteners SS 316 bolt pricing Stainless steel 316 bolts exporter SS 316 bolts for chemical industry SS 316 grade A-4-70 fasteners SS 316 industrial bolts supplier Marine grade SS 316 fasteners Conclusion SS 316 / A-4-70 bolts and fasteners are essential components in industries where high strength, corrosion resistance, and durability are critical. Their excellent resistance to rust and pitting, especially in chloride-rich environments, makes them a preferred choice for marine, chemical, food, and pharmaceutical applications. The availability of various sizes, lengths, and threading options ensures they can be tailored to fit a wide range of project requirements. In conclusion, SS 316 bolts and fasteners provide reliable performance under harsh conditions, contributing to the safety, functionality, and longevity of the structures and machinery they support. The combination of strength, durability, and resistance to corrosion makes them indispensable in many industrial applications. If you have any requirement, please email on sales@sagarsteel.net or call us on +91 9920177883