Mbemba Stainless is a reliable manufacturer and supplier located in Kinshasa, Congo, specializing in top-notch Stainless Steel 446 Fasteners. These fasteners are crafted from ferritic stainless steel, which is celebrated for its outstanding resistance to high-temperature oxidation and scaling, along with solid corrosion resistance in harsh chemical environments. At Mbemba Stainless, they prioritize precision manufacturing, rigorous quality control, and compliance with international standards. Their SS 446 fasteners are perfect for industrial and high-temperature applications, delivering dependable performance, mechanical strength, and long-lasting durability across sectors like petrochemical, power generation, furnace, and marine industries.
Stainless Steel 446 Fasteners mainly consist of 23–27% chromium and 1% nickel, along with trace amounts of carbon, manganese, and silicon. This unique blend results in a tensile strength of about 500–600 MPa, offering good yield strength, toughness, and hardness that are ideal for high-temperature scenarios. The elevated chromium content guarantees excellent resistance to oxidation, scaling, and thermal stress, while still providing moderate corrosion resistance in mildly aggressive settings.
| 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 | Cb | Ni | Fe |
| SS 446 | 2.0 max | 1.5 max | 0.75 max | 0.040 max | 0.030 max | 23.00 – 30.00 | – | 0.50 max | 0.10 – 0.25 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.5 g/cm3 | 1510 °C (2750 °F) | Psi – 75,000 , MPa – 485 | Psi – 40,000 , MPa – 275 | 20 % |
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Stainless Steel 446 Nuts offer excellent corrosion resistance, particularly in high-temperature environments. Available in sizes ranging from M3 to M48, they provide robust mechanical strength and are ideal for high-temperature applications.
Stainless Steel 446 Stud Bolts are highly resistant to oxidation and corrosion. Typically available in lengths from 25mm to 1000mm and diameters from M6 to M30, they are used for high-temperature and corrosive environments.
Stainless Steel 446 Bolts provide superior corrosion resistance and high-temperature stability. Sizes range from M5 to M36, with various lengths available. They are suitable for use in severe environments where oxidation is a concern.
Stainless Steel 446 threaded rods exhibit excellent resistance to corrosion and high temperatures. Commonly available in lengths up to 3000mm and diameters from M6 to M36, they are used in demanding industrial applications.
Stainless Steel 446 screws are known for their resistance to high temperatures and corrosion. Available in sizes ranging from M2 to M12, they are used in applications requiring high strength and durability under harsh conditions.
Stainless Steel 446 washers offer outstanding corrosion resistance and durability. They come in various sizes, typically from M3 to M50, and are used to distribute loads and prevent surface damage in high-temperature applications.
Our Stainless Steel 446 Fasteners are subjected to extensive testing, such as 100% radiographic examination, strength testing, macro/micro examination, raw material acceptance checking, third-party verification, combined-mode intergranular corrosion testing, chemical analysis, and PMI examination. These all-encompassing tests guarantee excellent robustness, performance and compliance with the same‐industry standards, making sure that our fasteners comply to the strict needs of high‐temperature and corrosion‐resistant applications.
These fasteners are commonly found in high-temperature piping systems, furnace assemblies, boiler components, heat exchangers, chemical processing equipment, and industrial machinery that face elevated temperatures. They’re also well-suited for power plants, petrochemical facilities, and marine applications where robust, durable, and heat-resistant fastening solutions are essential. The combination of mechanical strength, high-temperature performance, and corrosion resistance makes SS 446 fasteners a go-to choice for challenging industrial and thermal applications.
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