Weston Stainless in Midland, UK, is a prominent dealer in high-strength stainless steel products, supplying robust and resistant solutions to many industries. From its high-grade offerings, the Stainless Steel 446 Fasteners are renowned for their superior resistance to high temperature, oxidation stability, and mechanical strength. Belonging to Grade 446, these fasteners come in a variety of shapes such as bolts, nuts, washers, and screws to provide maximum versatility in uses. Produced from ferritic stainless steel, they exhibit excellent durability, heat resistance, and corrosion protection, making them perfect for application in extreme temperature conditions and applications involving long-term performance.
Stainless Steel 446 Fasteners consist mainly of iron with a high chromium level (23-27%) that promotes oxidation and corrosion resistance. They also include small percentages of carbon, manganese, silicon, and trace elements to enhance mechanical strength. These fasteners possess a tensile strength of about 550 MPa, yield strength of about 310 MPa, and elongation of 20%. Their physical features are a density of about 7.7 g/cm³ and high thermal conductivity, and they are applicable for high-temperature and harsh environment applications.
| 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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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.
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.
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.
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.
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.
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.
Stainless Steel 446 Fasteners find extensive use in applications demanding high-temperature and corrosion-resistance fastening solutions, for example, in power plants, heat exchangers, and furnace parts. They find great use in petrochemical facilities, cement plants, and incinerators where oxidation and scaling resistance is indispensable. They also find application in exhaust systems, refractory anchoring systems, and thermal process equipment. Their superior durability, mechanical stability, and resistance to extreme heat make them a first choice for applications requiring long-term reliability in harsh environments.
Stainless Steel 446 Fasteners are supplied with mill test certificates of EN 10204 3.1 or 3.2 to ensure conformity to global quality standards. They are safely packed in wooden crates, bubble wraps, or plastic-capped ends to avoid transit damage. Schedules for delivery are based on order size and destination, with effective logistics providing prompt shipment. Special packaging can be accommodated as requested to suit individual customer requirements, so the fasteners are delivered in the best possible condition.







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