Premium-grade stainless steel 309 nuts made for high-temperature and oxidising conditions are available from Vinit Stainless, a well-known manufacturer and supplier with headquarters in Chennai, India. Vinit Stainless, which is renowned for producing goods that satisfy global quality standards, produces SS 309 nuts with exceptional strength, durability, and heat and corrosion resistance. These fasteners are perfect for demanding applications in the heat treatment, power generation, and petrochemical sectors. Vinit Stainless has established itself as a reputable brand for dependable stainless steel fastening solutions in both the Indian and international markets thanks to its sophisticated production capabilities, dedication to on-time delivery, and dedication to customer satisfaction.
Because stainless steel 309 nuts are made up of 12–15% nickel and 22–24% chromium, they have exceptional resistance to scaling and oxidation at high temperatures. The alloy may contain up to 0.20% carbon and small amounts of manganese and silicon. SS 309 nuts have a yield strength of about 205 MPa and a tensile strength of about 550–750 MPa. Under heat stress, these nuts retain their structural integrity due to their good elongation and creep resistance. They are perfect for fasteners used in corrosive and high-temperature service environments because of their exceptional mechanical and chemical stability.
Element | Content (%) |
Iron, Fe | 60 |
Chromium, Cr | 23 |
Nickel, Ni | 14 |
Manganese, Mn | 2 |
Silicon, Si | 1 |
Carbon, C | 0.20 |
Phosphorous, P | 0.045 |
Sulfur, S | 0.030 |
Properties | Metric | Imperial |
Tensile strength | 620 MPa | 89900 psi |
Yield strength (@ strain 0.200%) | 310 MPa | 45000 psi |
Izod impact | 120 – 165 J | 88.5 – 122 ft-lb |
Shear modulus (typical for steel) | 77 GPa | 11200 ksi |
Elastic modulus | 200 GPa | 29008 ksi |
Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Elongation at break (in 50 mm) | 45% | 45% |
Hardness, Brinell | 147 | 147 |
Hardness, Rockwell B | 85 | 85 |
Hardness, Vickers (converted from Rockwell B hardness) | 169 | 169 |
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An ideal corrosion resistant material for high humidity environments. Stainless steel 309 nuts are available in sizes from M6 to M36, perfect for furnace parts, heat exchangers and industrial applications requiring high thermal resistance.
Stainless steel 309 coupling nuts are used to connect threaded cables under high temperature conditions. Sizes range from M6 to M36, making them suitable for use in furnace parts and heat exchangers, providing durability and heat resistance.
Stainless steel 309 nylon insert nuts make nylon inserts flexible for secure fastening in high temperature environments. Available in sizes from M6 to M24, they are ideal for applications in heat exchangers and industrial furnaces where stability is required.
Stainless steel 309 flange hex nuts for enhanced weight distribution with integrated flanges. Sizes range from M6 to M24, suitable for high temperature applications such as furnace components and heat exchangers, providing both strength and thermal resistance
Heavy duty stainless steel 309 hex nuts are designed for high pressure, high temperature applications. Available in sizes from M6 to M36, they are used in industrial machinery and furnace components, and offer exceptional strength and heat resistance.
Stainless steel 309 square nuts provide large surface area for efficient torque application. Sizes range from M6 to M24, making them suitable for hot environments such as heat exchangers and furnace parts, making them strong and durable.
Industries that need strong, heat-resistant fasteners frequently use stainless steel 309 nuts. They are ideal for use in furnaces, kilns, heat exchangers, exhaust systems, and other high-temperature equipment. These nuts are frequently found in thermal processing facilities, power plants, refineries, and petrochemical plants where they are frequently exposed to high temperatures and oxidising agents. Their corrosion resistance also makes them suitable for applications in the chemical industry and marine environments. In crucial systems where mechanical strength and temperature tolerance are crucial, SS 309 nuts offer reliable performance and secure fastening.
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