Home > Stainless Steel 446 Nuts
Stainless Steel 446 Nuts are incredibly tough fastening components made from ferritic stainless steel, which is celebrated for its remarkable ability to withstand high temperatures, oxidation, and corrosive environments. These nuts are designed to hold their ground and maintain structural strength, even when faced with extreme heat over time, making them perfect for demanding industrial settings. SS 446 Nuts excel in resisting thermal shock, scaling, and harsh chemical conditions, ensuring reliable fastening where regular stainless steel might fall short. With impressive mechanical properties, a long lifespan, and solid corrosion resistance, Stainless Steel 446 Nuts are a go-to choice in industries that need strong fastening solutions for high-temperature and heavy-duty equipment.
These nuts are crafted with a high chromium content that ranges from 23% to 27%, along with trace amounts of carbon, manganese, sulfur, silicon, and nickel. This elevated chromium level gives them exceptional resistance to oxidation and scaling at temperatures reaching up to 1100°C. They boast a tensile strength of about 485 MPa and a yield strength of around 275 MPa, along with excellent creep resistance when the heat is on. SS 446 Nuts keep their structural integrity intact under thermal cycling and mechanical stress, delivering consistent performance even in tough chemical and industrial environments.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 446 | min. | – | – | – | – | – | 23.0 | – | – | 0.10 |
| max. | 0.2 | 1.5 | 0.75 | 0.040 | 0.030 | 30.0 | – | 0.50 | 0.25 | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 446 | 485 | 275 | 20 | 92 | 201 |
You’ll find Stainless Steel 446 Nuts commonly used in high-temperature industrial processes like furnaces, boilers, heat treatment facilities, and annealing lines. They’re also heavily utilized in petrochemical refineries, power generation systems, exhaust systems, incinerators, heat exchangers, and thermal processing equipment. Their impressive resistance to oxidation and corrosive gases makes them a great fit for chemical processing plants and environments exposed to sulfur or chlorine. Plus, SS 446 Nuts are essential in heavy machinery, refractory equipment, industrial burners, and high-temperature piping systems where reliable fastening is crucial.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
