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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 321 / 321H Fasteners are expertly crafted to offer outstanding corrosion resistance, mechanical strength, and durability, especially in high-temperature and demanding environments. With a focus on precision and rigorous quality control, these fasteners guarantee secure and long-lasting performance in critical assemblies. Aria Fasteners caters to various industries, including aerospace, petrochemical, power generation, and thermal processing, providing components that are designed to perform consistently under thermal cycling and extreme service conditions.
The Stainless Steel 321 / 321H Fasteners are made from a titanium-stabilized austenitic stainless steel alloy, which gives them remarkable resistance to intergranular corrosion and scaling when exposed to high temperatures. The 321H variant, featuring a higher carbon content, boosts strength and mechanical stability at elevated temperatures while still offering excellent corrosion resistance. These fasteners provide dependable tensile strength, thermal fatigue resistance, and durability, with precision machining that ensures accurate threading and compatibility with corresponding nuts, bolts, washers, and studs for secure clamping in both static and dynamic applications.
| Standard | ASTM A193,A194 / ASME SA193,SA194 |
| Standard | DIN, ASTM, BS and all International Standards |
| Length | 3 mm to 200 mm |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
| SS 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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 321/321H fasteners are used at high temperatures where strength and corrosion resistance are important. They are ideal for aerospace, automotive exhaust systems and high-temperature petrochemical equipment. These packaging materials are also suitable for chemical industries due to their resistance to sulfuric and phosphoric acids. Their robust mechanical properties enable them to be reliable in environments with high temperatures and corrosive conditions, providing long service life and reliability in complex industrial applications
These fasteners find their place in industries that demand high-performance, heat-resistant, and corrosion-resistant fastening solutions. They are perfect for use in boilers, heat exchangers, furnace components, flanged joints, and industrial machinery that operate at elevated temperatures. Additionally, Stainless Steel 321 / 321H Fasteners are utilized in chemical processing equipment, aerospace structures, and high-temperature assemblies where reliable and long-lasting fastening is essential. Their unique blend of thermal resistance, mechanical strength, and durability makes them a go-to choice for critical 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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