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Aria Fasteners, located in Hamilton, New Zealand, has built a solid reputation as a reliable manufacturer and supplier of top-notch industrial fastening solutions. Their Stainless Steel 309/309S Nuts are designed to excel in high-temperature and demanding environments, offering outstanding heat resistance, mechanical strength, and corrosion protection. With a focus on precision and rigorous quality control, these nuts guarantee secure and dependable fastening for critical assemblies. Aria Fasteners caters to various industries, including petrochemical processing, furnace manufacturing, thermal engineering, and power generation, providing components that are engineered for durability and performance even under extreme thermal and mechanical conditions.
Crafted from a high-chromium, high-nickel austenitic stainless steel alloy, Stainless Steel 309/309S Nuts boast remarkable resistance to oxidation, scaling, and thermal fatigue at temperatures soaring up to 1100°C. The 309S variant, which features a lower carbon content, enhances weldability and reduces carbide precipitation during thermal cycling. These nuts not only deliver superior mechanical strength and thermal stability but also ensure corrosion resistance, thanks to precision machining that guarantees a proper fit with compatible bolts, studs, and washers for reliable clamping force.
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 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Stainless steel 309/309S nuts are ideal for applications involving high temperatures and corrosive environments. They are commonly used in industrial applications such as power plants, petrochemical plants, and furnace construction, where high temperature and pressure resistance are important. Their good oxidation resistance makes them suitable for high-temperature applications, including heat exchangers, air filters and industrial furnace EN air – used in the aerospace and automotive industries. Their strength ensures reliable and durable performance in demanding applications.
These nuts find their place in industries that demand strong, heat-resistant, and corrosion-resistant fastening solutions. They are perfect for applications involving furnace components, boilers, kilns, heat exchangers, and petrochemical processing equipment. Additionally, Stainless Steel 309/309S Nuts are utilized in flanged joints, structural supports, and industrial machinery that operate under continuous high-temperature conditions. Their unique blend of thermal resistance, mechanical durability, and corrosion protection makes them a trustworthy choice for critical high-heat applications.
Aria Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hamilton, New Zealand, with over 8 years of experience serving global industries.
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