Walid Stainless, headquartered in Tunis, Tunisia, is a trusted manufacturer and supplier of high-quality stainless steel products. Among their specialized offerings are Stainless Steel 348 Nuts, designed for applications requiring excellent corrosion resistance, high-temperature strength, and long-term durability. These nuts are ideal for industrial, chemical, and power-generation assemblies exposed to elevated temperatures and aggressive environments. At Walid Stainless, each nut is manufactured with precision and undergoes strict quality control to ensure consistent performance. Clients rely on 348 Nuts for secure, reliable, and long-lasting fastening solutions, making them a preferred choice for demanding high-temperature industrial projects.
Stainless Steel 348 Nuts are made from a titanium-stabilized austenitic stainless steel alloy containing approximately 20–21% chromium, 25–28% nickel, and 1.5–2% titanium. Titanium stabilization prevents sensitization and enhances corrosion resistance at elevated temperatures. These nuts typically exhibit tensile strength between 550–700 MPa and hardness around 180–220 HB. The austenitic structure provides excellent creep resistance, mechanical durability, and dimensional stability under thermal and mechanical stress. 348 Nuts are suitable for industrial, chemical, and high-temperature fastening applications requiring long-term reliability and resistance to oxidation and corrosion.
| Element | Content (%) |
|---|---|
| Iron, Fe | 66 |
| Chromium, Cr | 18 |
| Nickel, Ni | 10 |
| Manganese, Mn | 2.0 |
| Silicon, Si | 1.0 |
| Nb + Ta | 0.8 |
| Cobalt, Co | 0.2 |
| Tantalum, Ta | 0.1 |
| Carbon, C | 0.080 |
| Phosphorous, P | 0.045 |
| Sulfur, S | 0.030 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 655 MPa | 95000 psi |
| Yield strength (@ strain 0.200%) | 275 MPa | 39900 psi |
| Izod impact | 120 – 160 J | 88.5 – 118 ft-lb |
| Charpy impact | 160 J | 118 ft-lb |
| Shear modulus (typical for steel) | 77.0 GPa | 11200 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 45% | 45% |
| Hardness, Brinell (converted from Rockwell B hardness) | 147 | 147 |
| Hardness, Knoop (converted from Rockwell B hardness) | 164 | 164 |
| Hardness, Rockwell B | 85 | 85 |
| Hardness, Vickers (converted from Rockwell B hardness) | 169 | 169 |
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Stainless steel 348 nuts are ideal for high temperature applications. Available in sizes from M6 to M36, these nuts are highly resistant to corrosion and oxidation, making them suitable for nuclear reactors and chemical devices.
The stainless steel 348 coupling nuts are designed to connect threaded rods in harsh environments. Sizes range from M6 to M36, making them ideal for applications in hot and humid environments, such as medical plants and power plants
Stainless steel 348 nylon insert nuts have nylon inserts for secure fastening. Available in sizes from M6 to M24, they offer high thermal stability and resistance, suitable for use in aerospace and industrial equipment.
Stainless steel 348 flange hex nuts for enhanced weight distribution with integrated flanges. Available in sizes from M6 to M24, these panels are used in complex applications such as furnace components and heat exchangers, providing strong support.
Heavy duty stainless steel 348 hex nuts are designed for high stress and high temperature environments. Available in sizes from M6 to M36, they are ideal for use in industrial equipment and nuclear reactors, providing exceptional strength and durability.
Stainless steel 348 square nuts provide large surface area for efficient torque application. Sizes range from M6 to M24, making it suitable for secure communications in hot environments, such as chemical applications and space applications.
Walid Stainless delivers quality Stainless Steel 348 Nuts with consistent performance, as tested under wide-ranging tests like hardness tests, spectro analysis, PMI, and flaring tests. In addition, micro and macro tests, pitting resistance, and IGC tests confirm that the nuts are of superior quality that we deliver. We ensure complete documentation, such as commercial invoices, packing lists showing net and gross weights, box numbers, and labels besides our testing protocols. Our legalized or attested Certificate of Origin along with Third-Party Inspection Certificates ensures our uncompromising commitment to delivering exceptional products and unparalleled customer satisfaction.
Stainless Steel 348 Nuts are widely used in industries requiring heat-resistant, corrosion-resistant, and durable fastening solutions. They are ideal for boilers, heat exchangers, chemical processing equipment, power-generation machinery, and structural assemblies exposed to high temperatures and corrosive environments. The titanium-stabilized austenitic structure ensures long-term dimensional stability, mechanical reliability, and resistance to stress corrosion and oxidation. Engineers and technicians rely on 348 Nuts for safe, secure, and consistent fastening performance. Walid Stainless ensures that each nut meets strict quality standards, providing dependable materials for chemical, power, and high-temperature industrial projects requiring durability and reliability.







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