Hardness testing to ISO 6508-1
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Alloy 20 Hex Bolts are high-performance fasteners designed for use in highly corrosive environments, especially those involving sulfuric acid and chlorides. At Vision Alloys, we are a well-known manufacturer and supplier of Alloy 20 hex bolts in India, offering durable and precision-engineered fasteners that meet the stringent requirements of chemical and process industries.
Alloy 20 (UNS N08020) is a type of metal made from nickel, iron, and chromium that is very good at resisting damage from acids, rust, and other types of corrosion. It also includes additions of copper and molybdenum, making it particularly effective in environments containing sulfuric, nitric, phosphoric, and chlorides. These properties make Alloy 20 hex bolts suitable for chemical processing, food and beverage, pharmaceutical, petrochemical, and marine applications.
We manufacture Alloy 20 hex bolts in standard sizes ranging from M6 to M48 (or ¼” to 2”), with thread types including metric, UNC, and UNF. Bolts are available in both fully threaded and partially threaded forms, with various head types and finishes. All fasteners conform to international specifications such as ASTM B473, ASTM B564, ASME SB473, and DIN 933/931 standards.
Our production includes both hot-forged and cold-forged hex bolts, available in natural, passivated, or coated finishes. Vision Alloys offers custom lengths and specifications to fit specific design needs, making sure the products are accurate in size and resistant to corrosion, even in tough chemical environments.
Pricing typically falls in the range of ₹75 to ₹500 per piece, depending on size, finish, and quantity. We supply both domestic and international clients with fast lead times and secure packaging options, including bags, cartons, or wooden crates. As a reliable Alloy 20 hex bolt manufacturer and supplier, Vision Alloys guarantees consistent quality, technical support, and timely delivery. If your application demands superior corrosion resistance and performance under acidic conditions, our Alloy 20 hex bolts provide the robust solution your project needs.
Specifications | ASTM A193 / ASME SA193 |
Standard | ISO, ASTM, DIN, JIS, IS, GB, BS, and all International Standards |
Diameter | M3 to M56 up to 500 MM |
DIN Standard | B.S. DIN 931, DIN 933, DIN 912, DIN 934, DIN 6923, DIN 603, DIN 7981, DIN 970, DIN916, DIN 7982, DIN 7985, DIN 913 |
UTS | NPT, UNS, UNF, UNC, UNEF, NPTF |
ISO | ISO 4033, ISO 4032, ISO 7380, ISO 4017, JIS standards |
Threads | UNF, BSW, BSF, METRIC, UNC, or as required |
Surface Coating | Black Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request |
Manufacturing Process | Wire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing. |
In applications where safety and reliability are paramount, using the right fasteners is essential. Alloy 20 hex bolts offer a reliable solution for securing critical equipment and structures in harsh environments. It's crucial to select the appropriate size and type of hex bolt to ensure a secure connection.
Overall, Alloy 20 hex bolts are a wise choice for industries dealing with corrosive substances, ensuring that equipment and structures remain secure and functional for extended periods. Their resistance to corrosion, durability, and ease of installation make them an excellent choice for demanding applications.
To preserve the high standards of our selection of industrial fasteners, we have always adhered to a systematic quality management process.
Our staff of experts is vibrant and talented, and they have always been our largest supporters and contributors to our success. Our vision is to create a world of fasteners.
STANDARD | WERKSTOFF NR. | UNS |
Alloy 20 | 2.4660 | N08020 |
Grade | C | Mn | Si | S | Cu | Ni | Cr | Fe | Mo | P |
Alloy 20 | 0.07 max | 2.00 max | 1.00 max | 0.035 max | 3.00 – 4.00 | 32.00 – 38.00 | 19.00 – 21.00 | 29.85 min* | 2.00 – 3.00 | 0.045 max |
Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
Alloy 20 | 8.1 g/cm3 | 1443 °C (2430 °F) | Psi -80,000, MPa -551 | Psi - 35,000, MPa - 241 | 30 % |
Hardness testing to ISO 6508-1
Nut proof load testing to ISO 898-2
Suitability for preloading to EN 14399-2
Calibrated gauges and tools
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