Weston Stainless, Midland, UK, is a well-known supplier and manufacturer of high-grade stainless steel products, including precision-engineered and long–lasting fasteners. Of their products, Stainless Steel 422 Fasteners are particularly known for their superior strength and resistance to heat. These fasteners, which are produced using Grade 422 stainless steel, are offered in several shapes such as bolts, nuts, screws, and washers. The alloy, a martensitic stainless steel, offers greater toughness and corrosion resistance, which makes it ideal for challenging industrial applications. Their high-performance properties make them perfect for application in harsh environments that demand durability and heat resistance.
Stainless Steel 422 Fasteners contain a chemical composition of about 12% Chromium, 1% Molybdenum, 1% Vanadium, and 0.2-0.3% Carbon, with Nickel and Manganese in trace amounts, which increases their hardness and corrosion resistance. These fasteners possess very good mechanical properties such as tensile strength of approximately 965 MPa, yield strength of 830 MPa, and hardness of up to 45 HRC. They also have good physical properties in the form of high thermal conductivity and resistance against oxidation, which makes them appropriate for use under high temperature conditions. Due to their capacity to preserve their strength at high temperatures, they are extremely dependable in industrial applications.
| 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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Corrosion-resistant designed for high-temperature applications and offer superior strength. They typically come in sizes ranging from M4 to M30 and dimensions matching standard thread specifications for robust fastening.
Excellent corrosion resistance and are ideal for high-stress environments. They are available sizes from M6 to M36, with standard lengths and threads ensuring secure connections in various industrial applications.
Impressive corrosion resistance and are suitable for high-temperature environments. Common sizes include M8 to M36, with varying lengths and thread types available to meet structural and mechanical requirements.
Excellent corrosion resistance, Stainless Steel 442 threaded rods are used in various structural applications. They come in sizes ranging from M6 to M30 and lengths from 1 meter to 3 meters, with customizable threads and finishes.
High corrosion resistance, Stainless Steel 442 screws are used in applications exposed to harsh environments. They are available sizes from M4 to M12, with lengths and head types tailored to specific assembly needs.
Highly resistant to corrosion and are used to distribute load and prevent damage. Available in sizes ranging from M4 to M36, they come in various thicknesses and diameters to match different bolt sizes and applications.
Stainless Steel 422 Fasteners are widely used in industries such as aerospace, power generation, marine, and automotive due to their high strength and thermal stability. They are commonly found in turbine components, exhaust systems, high-pressure valves, and heat exchangers, where they withstand extreme temperatures and stress. Their corrosion-resistant nature makes them ideal for harsh environments, including offshore structures and chemical processing plants. Moreover, these fasteners are employed in heavy machinery and manufacturing facilities where wear resistance and durability are essential for long-term performance under mechanical stress.
Stainless Steel 422 Fasteners are supplied with necessary test certificates such as Mill Test Certificates (MTC) according to EN 10204 3.1/3.2, third-party inspection reports, and material traceability records. Packaging is done to ensure product safety, with fasteners being packed in wooden boxes, cartons, or plastic containers to avoid damage during transportation. Delivery is made efficiently to satisfy global needs, and appropriate labeling and documentation for identification and adherence to industry standards are ensured. Such fasteners are distributed globally with assured logistics backup for timely delivery to customers.







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