Home > Permalloy Round Bar
Okoye Nickel Alloys is a well-respected manufacturer and supplier of top-notch Permalloy Round Bars based in Kinshasa, Congo. They cater to a variety of industrial sectors with their precisely engineered nickel-iron alloy products. Renowned for their outstanding magnetic performance materials, the company emphasizes advanced production methods, rigorous quality control, and a strong focus on customer service. Their Permalloy Round Bars are highly valued for their remarkable soft magnetic properties, impressive permeability, and long-lasting durability. With a dedication to global standards, timely delivery, and technical know-how, Okoye Nickel Alloys plays a vital role in supporting essential applications across electronics, instrumentation, power systems, and engineering industries in Kinshasa and beyond.
Permalloy Round Bar made primarily of 78% nickel and 21% iron, with small amounts of other elements such as copper and molybdenum. This unique design provides excellent magnetic permeability and low restrictions. Mechanical properties include high tensile strength, good ductility and corrosion resistance. Permalloy Round Bars offer advantages such as high magnetic saturation, low hysteresis losses, and excellent performance in magnetic applications. These strips are ideal for use in transformers, magnetic shield and sensors, providing efficient power conversion and minimal signal interference for electronic devices.
| Standards : | — |
| Thickness : | Range from .008″ to .0125″ |
| Hardness : | Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc. |
| Form : | Round Bar, Wire |
| Tungsten Grades | HA 190 / HA 1925 / HA 195 / HE 390 / HE 3925 / HE 395 / HE 397 |
| C | P | S | Mn | Si | Ni | Cr | Co | Mo | Cu | Fe | |
| 1J46 | ≤0.03 | ≤0.02 | ≤0.02 | 0.6-1.1 | 0.15-0.30 | 45-46.5 | – | – | – | ≤0.2 | Balance |
| 1J50 | ≤0.03 | ≤0.02 | ≤0.02 | 0.3-0.6 | 0.15-0.30 | 49-50.5 | – | – | – | ≤0.2 | Balance |
| 1J79 | ≤0.03 | ≤0.02 | ≤0.02 | 0.6-1.1 | 0.30-0.50 | 78.5-81.5 | – | – | 3.8-4.1 | ≤0.2 | Balance |
| 1J85 | ≤0.03 | ≤0.02 | ≤0.02 | 0.3-0.6 | 0.15-0.30 | 79-81 | – | – | 4.8-5.2 | ≤0.2 | Balance |
| Grade | Resisitivity (μΩ•m) | Desinty (g/cm3) | CuriePoint℃ | HighSaturatedmagneto-strictioncoefficient λθ/10-6 | Brinellhardness HBS | σbTensile Strength MPa | σsYieldStrength MPa | Elongation (%)δ | ||||
| unan- nealed | an- nealed | unan- nealed | an- nealed | unan- nealed | an- nealed | unan- nealed | an- nealed | |||||
| 1J46 | 0.45 | 8.2 | 400 | 25 | 170 | 130 | 735 | 735 | 3 | |||
| 1J50 | 0.45 | 8.2 | 500 | 25 | 170 | 130 | 785 | 450 | 685 | 150 | 3 | 37 |
| 1J79 | 0.55 | 8.6 | 450 | 2 | 210 | 120 | 1030 | 560 | 980 | 150 | 3 | 50 |
| 1J85 | 0.56 | 8.75 | 400 | 0.5 | – | – | – | – | – | – | – | – |
Permalloy Round Bars mainly consist of nickel (usually 75–80%) and iron, with carefully controlled amounts of molybdenum, copper, or silicon to boost their magnetic properties. This alloy boasts exceptionally high permeability, low coercivity, and minimal core losses, making it perfect for magnetic and electrical components. On the mechanical side, Permalloy offers good ductility, moderate tensile strength, and excellent formability, which makes machining and fabrication a breeze. Its stability under varying magnetic fields and consistent performance across different temperatures make it a dependable choice for sensitive magnetic applications in challenging industrial settings.
Contact us to get a quick quote for your requirement.
Permalloy Round Bars find extensive use in industries that demand superior magnetic sensitivity and stability. They are crucial in the production of transformer cores, magnetic shielding components, inductors, sensors, and precision electrical instruments. Thanks to their low hysteresis loss, they are the go-to choice for high-performance electromagnetic devices, telecommunications gear, and audio systems. In scientific and defense sectors, Permalloy is employed in magnetic field measurement tools and shielding systems.
