Mitchell Stainless is your go-to manufacturer and supplier of top-notch Stainless Steel 440B Nuts right here in Hamilton, New Zealand. We cater to industries that require exceptional strength, durability, and precision. With a strong commitment to quality assurance and cutting-edge manufacturing techniques, we ensure our nuts meet international standards and your specific needs. Stainless Steel 440B is renowned for its impressive hardness, wear resistance, and moderate corrosion resistance, making it perfect for tough mechanical applications. With our technical know-how, dependable supply chains, and a focus on customer satisfaction, Mitchell Stainless guarantees consistent performance and lasting value.
Stainless Steel 440B is a high-carbon martensitic stainless steel that contains about 16–18% chromium and has a higher carbon content than 440A, which enhances its hardness and wear resistance. After undergoing proper heat treatment, 440B nuts showcase remarkable tensile strength, excellent load-bearing capabilities, and outstanding fatigue resistance. They maintain good dimensional stability, high surface hardness, and reliable performance even under stress. While their corrosion resistance is moderate compared to austenitic grades, it’s more than adequate for controlled or mildly corrosive environments that demand strength and precision.
C | Si | Mn | P | S | N | Cr | Cu | Mo | Ni | Ti | V |
|---|---|---|---|---|---|---|---|---|---|---|---|
0.75 – 0.95 | – | – | – | – | – | 16.00 – 18.00 | – | 0.90 – 1.30 | – | – | 0.07 – 0.12 |
| Tempering Temperature (°C) | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness Rockwell (HR C) | Impact Charpy V (J) |
|---|---|---|---|---|---|
| Annealed* | 758 | 448 | 14 | 269HB max | – |
| 204 | 2030 | 1900 | 4 | 59 | 9 |
| 260 | 1960 | 1830 | 4 | 57 | 9 |
| 316 | 1860 | 1740 | 4 | 56 | 9 |
| 371 | 1790 | 1660 | 4 | 56 | 9 |
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.74 g/cm3 | 0.280 lb/in³ |
| Melting point | 1482°C | 2700°F |
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A corrosion-resistant product, Stainless Steel 440B nuts are available in sizes from M6 to M64. Known for their high strength and hardness, they are ideal for heavy-duty applications in industrial machinery and automotive components.
A corrosion-resistant product, Stainless Steel 440B coupling nuts, used to join two male threads, come in sizes from M6 to M36. They provide exceptional strength and durability, making them suitable for high-stress and heavy-duty applications.
A corrosion-resistant product, Stainless Steel 440B nylon insert nuts, or lock nuts, are available in sizes from M3 to M36. The nylon insert prevents loosening under vibration, offering secure fastening in high-strength and demanding environments.
A corrosion-resistant product, Stainless Steel 440B flange hex nuts feature an integrated flange and come in sizes from M5 to M20. They provide enhanced load distribution and stability, suitable for high-stress and high-temperature applications.
A corrosion-resistant product, Stainless Steel 440B heavy hex nuts are available in sizes from M10 to M48. Their increased thickness and strength make them ideal for heavy-duty applications and high-stress environments requiring robust and secure fastening.
A corrosion-resistant product, Stainless Steel 440B square nuts offer a larger contact surface and come in sizes from M6 to M30. They are ideal for high-strength applications requiring reliable performance in heavy clamping and industrial settings.
Mitchell Stainless ensures high-quality materials with a string of tests for excellence. Stainless Steel 440B Nut goes through proper checks such as hardness testing, spectrochemical analysis, PMI testing, tensile testing, micro and macro structural tests, pitting resistance, and IGC testing. We assure high performance through these strict checks. Supporting our commitment to quality, we provide documentation, such as commercial invoices, packing lists, labels, Certificates of Origin, and Third-Party Inspection Certificates, for customer satisfaction on pricing, delivery, and reliability of the products.
The Stainless Steel 440B Nuts produced by Mitchell Stainless are widely utilized in scenarios where high strength, wear resistance, and reliability are crucial. You’ll find them in industrial machinery, automotive components, tooling assemblies, and mechanical equipment that face high loads and friction. They’re also perfect for aerospace subassemblies, pump and valve systems, and precision engineering applications. Thanks to their hardness and durability, these nuts are a trusted choice for demanding environments, ensuring that your projects run smoothly and efficiently.
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