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MUKAU FASTENERS, a reliable manufacturer and supplier based in Kinshasa, Congo, specializes in top-quality Stainless Steel 321/321H Fasteners. These fasteners are crafted for outstanding strength, durability, and resistance to high-temperature corrosion. Thanks to their titanium stabilization, they effectively prevent intergranular corrosion and maintain excellent performance even under prolonged heat exposure. With a commitment to precision and strict quality standards, MUKAU FASTENERS’ Stainless Steel 321/321H Fasteners are perfect for tough industrial settings. They’re commonly found in petrochemical, marine, power generation, aerospace, and chemical processing industries, ensuring secure and long-lasting fastening solutions in high-temperature and corrosive environments.
Stainless Steel 321/321H Fasteners are made up of 17–19% chromium, 9–13% nickel, and are stabilized with titanium (which has five times the carbon content) to avoid carbide precipitation. The 321H version has a higher carbon content (0.04–0.10%), which boosts strength at elevated temperatures. These fasteners showcase impressive tensile strength ranging from 515–750 MPa, yield strength between 205–240 MPa, and remarkable elongation and toughness. Their titanium stabilization provides excellent resistance to intergranular corrosion, oxidation, and creep, making Stainless Steel 321/321H Fasteners perfect for high-stress and thermal cycling situations.
| 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 find extensive use in heat exchangers, boilers, exhaust systems, chemical processing equipment, and pressure vessels where high-temperature resistance and corrosion protection are crucial. Their stability and strength make them ideal for petrochemical plants, power generation facilities, refineries, and aerospace components that operate under thermal and mechanical stress. Additionally, these fasteners are utilized in marine, pharmaceutical, and food industries, ensuring long-lasting durability in demanding applications.
At Mukau Fasteners, we ensure the quality and protection of our Stainless Steel 321/321H fasteners during installation. Each binder is thoroughly inspected and individually wrapped in protective packaging to prevent corrosion. They are then placed in tightly labeled boxes with detailed product descriptions and quantities. Our packaging is designed to protect against environmental and physical effects, ensuring that your high-performance fasteners arrive in pristine condition and ready for immediate use.
Mukau Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kinshasa, Congo, with over 8 years of experience serving global industries.
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