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Stainless Steel 442 Nuts are tough, high-temperature fasteners made from ferritic stainless steel, celebrated for their outstanding resistance to oxidation, impressive hardness, and stability even in extreme heat. These nuts are crafted for situations where top-notch heat tolerance and wear resistance are a must. They hold up beautifully in demanding industrial settings, ensuring that components stay securely fastened, even when faced with constant thermal cycling. Thanks to their high chromium content, they boast remarkable durability and corrosion resistance, promising a long lifespan and reliable performance in harsh working conditions.
The makeup of Stainless Steel 442 Nuts includes iron and a significant amount of chromium, typically between 18–23%, with minimal nickel. This ferritic stainless steel grade shines when it comes to heat resistance and oxidation stability, handling temperatures as high as 1093°C (2000°F). On the mechanical side, these nuts are known for their high hardness, robust tensile strength, and excellent scaling resistance. Their design ensures good dimensional stability during thermal exposure, making them perfect for fastening applications that demand strength and reliability in extreme temperatures.
| Component | Wt. % |
| C | 0.23 |
| Cr | 12.5 |
| Fe | 83 |
| Mn | 0.5 |
| Mo | 1 |
| Ni | 0.8 |
| P | 0.02 |
| S | 0.015 |
| Si | 0.38 |
| V | 0.23 |
| W | 1 |
| Mechanical Properties | Metric | English | Comments |
| Hardness, Brinell | 290 | 290 | Estimated from Rockwell C value for Brinell test with 3000 kg load/10 mm diameter ball |
| Hardness, Knoop | 315 | 315 | Estimated from Rockwell C value. |
| Hardness, Rockwell C | 30 | 30 | |
| Hardness, Vickers | 304 | 304 | Estimated from Rockwell C value. |
| Tensile Strength, Ultimate | 897 MPa | 130000 psi | |
| Tensile Strength, Yield | 828 MPa | 120000 psi | 0.2% Offset |
| Elongation at Break | 15 % | 15 % | |
| Reduction of Area | 40 % | 40 % |
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Stainless steel 442 nuts are used extensively in applications requiring strong fastening solutions in ambient temperatures. It is commonly used in automotive exhaust systems, where it resists heat and exhaust gases. Furthermore, these nuts are used in high-temperature industrial tools and chemical reactions, providing reliable bonding under extreme conditions Resistance to scaling and oxidation makes them suitable for use in power generation, chemical plants, and other durable environments and reliability are important requirements
You’ll find Stainless Steel 442 Nuts in various industries where high-temperature performance is critical. They’re often used in furnace components, heat treatment equipment, kilns, exhaust systems, and high-temperature chemical processing units. In power plants and petrochemical facilities, they provide secure fastening in areas that face thermal stress, oxidation, and corrosive gases. Their durability also makes them a go-to choice for automotive exhaust parts, gas turbine components, and industrial heating systems. With their impressive heat resistance and mechanical strength, Stainless Steel 442 Nuts are the preferred option for high-stress, high-temperature environments.
Aria Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hamilton, New Zealand, with over 8 years of experience serving global industries.
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