Khaled Stainless, located in Cairo, Egypt, is a reliable manufacturer and supplier of Stainless Steel 440B nuts, specifically crafted for high-strength and precision mechanical applications. These nuts are made from top-quality martensitic stainless steel and undergo controlled heat treatment processes, ensuring they offer outstanding hardness, wear resistance, and precise dimensions. Khaled Stainless caters to various sectors, including automotive, machinery, valves, pumps, and industrial equipment, both within Egypt and in export markets. By adhering to ASTM and EN standards and providing options for customized sizes, threading, and finishes, the company guarantees dependable fastening solutions for demanding load-bearing assemblies.
Stainless Steel 440B is a type of martensitic stainless steel that contains around 0.75–0.95% carbon and 16–18% chromium. This unique composition allows SS 440B nuts to achieve impressive hardness and tensile strength after heat treatment, while also offering better toughness compared to 440C. They excel in wear and abrasion resistance, possess good fatigue strength, and have moderate corrosion resistance in mild environments. SS 440B nuts are magnetic and well-suited for high mechanical load applications, although their ductility and weldability are somewhat limited when compared to austenitic stainless steel grades.
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.
Khaled 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.
Stainless Steel 440B nuts are ideal for applications that demand high strength, rigidity, and wear resistance. You’ll commonly find them in pumps, valves, compressors, precision machinery, tooling systems, and heavy-duty mechanical assemblies. They’re also used in automotive and industrial equipment that face high stress and friction. SS 440B nuts perform best in dry or mildly corrosive environments and are not recommended for marine or highly acidic conditions, making them a great fit for controlled industrial applications.
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