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Mira Fasteners is a trusted manufacturer and supplier of Stainless Steel 321 / 321H Fasteners, proudly based in Kuala Lumpur, Malaysia. These fasteners are crafted to excel in high-temperature and corrosive settings, with SS 321 featuring titanium stabilization and SS 321H offering improved creep resistance thanks to its higher carbon content. Mira Fasteners supplies these durable fasteners to a variety of industries, including chemical processing, power generation, heat treatment, and aerospace, throughout Malaysia and Southeast Asia, ensuring they meet global quality standards while providing long-lasting durability and thermal stability.
Stainless Steel 321 / 321H Fasteners consist of 17–20% chromium and 9–13% nickel, with titanium added to help prevent intergranular corrosion. The SS 321H variant has a higher carbon content (0.04–0.10%) to boost its strength and creep resistance at elevated temperatures. These fasteners boast a tensile strength between 515–700 MPa and maintain their mechanical integrity even at temperatures reaching up to 870°C.
| 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
You’ll find Stainless Steel 321 / 321H Fasteners in applications like heat exchangers, pressure vessels, exhaust systems, furnace components, and thermal oxidizers. Their remarkable resistance to oxidation, scaling, and intergranular corrosion during prolonged heating makes them perfect for welding tasks and environments that experience frequent temperature changes. The titanium in SS 321 helps prevent carbide precipitation, while the increased carbon in SS 321H enhances performance under sustained heat, making them the go-to choice for fastening in high-stress, high-temperature conditions.
Mira Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kuala lumpur, Malaysia, with over 8 years of experience serving global industries.
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