Home > Stainless Steel 446 Fasteners
Stainless Steel 446 Fasteners are top-notch fastening components crafted from ferritic stainless steel, specifically engineered to handle incredibly high temperatures and harsh environments. They’re celebrated for their outstanding resistance to oxidation and scaling, ensuring they keep their structural integrity even in situations that exceed 1100°C. These fasteners excel in sulfurous, chlorinated, and oxidizing atmospheres, making them perfect for thermal processing systems. With their reliable strength, durability, and long lifespan in tough industrial settings, SS 446 Fasteners are the go-to choice for furnace components, heat exchangers, and high-temperature engineering applications where regular stainless steel fasteners might not cut it.
Made primarily with a high Chromium content (23–27%) along with Manganese, Silicon, Carbon, and minimal Nickel, the chemistry of SS 446 provides remarkable resistance to oxidation, corrosion, and scaling at elevated temperatures. On the mechanical side, SS 446 boasts good tensile strength, high thermal stability, and enhanced structural integrity during thermal cycling. It has a tensile strength of about 485 MPa and a yield strength of roughly 275 MPa. These fasteners also show impressive creep resistance, maintaining their reliability under heavy mechanical loads and varying temperature conditions.
| 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 % |
| STANDARD | WERKSTOFF NR. | UNS |
| Hastelloy B2 | 2.4617 | N10665 |
You’ll find Stainless Steel 446 Fasteners widely used in industries where high-temperature resilience and corrosion resistance are essential. They’re commonly found in furnace parts, annealing boxes, heat treatment equipment, kilns, boiler components, exhaust systems, and power plant hardware. They’re often utilized in petrochemical systems, refineries, waste incinerators, thermal processing plants, and chemical processing industries. Their durability and scaling resistance also make them ideal for gas turbine components, heat-resistant structural assemblies, and automotive exhaust systems. SS 446 Fasteners are built to last!
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
