1J50 Soft Magnetic Alloy
1J50 is a soft magnetic alloy, a high-saturation magnetic induction iron-nickel alloy containing 45-55% nickel. It exhibits relatively good initial permeability and a high saturation induction strength. The saturation induction value of 1J50 is approximately 1.55T, with an initial permeability of around 0.42 mHm. Among nickel-iron alloys, it has a high saturation induction value. High magnetic performance can be achieved through low-temperature annealing. After the final heat treatment, the alloy shows a clear cubic crystal structure, and its hysteresis loop is almost rectangular, with a remanence as high as 1.5T.
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Type of supply for 1J50
| Form | Thickness/ Diameter | Width | Length |
|---|---|---|---|
| 1J50 Strip | 0.05 mm to 0.5 mm | 10 mm to 300 mm | Up to 1000 mm (or in coils) |
| 1J50 Bar | 1 mm to 20 mm | – | 500 mm to 6000 mm |
| 1J50 Wire | 0.05 mm to 5 mm | – | Supplied in reels (custom length) |
| 1J50 Sheet/Plate | 0.5 mm to 3 mm | 100 mm to 600 mm | Custom or standard lengths |
| 1J50 Rod | 1 mm to 30 mm (diameter) | – | Up to 6000 mm |
Chemical composition of 1J50
| Element | Percentage (%) | Notes |
|---|---|---|
| Nickel (Ni) | 45.0 – 50.0 | Provides high magnetic permeability and stability |
| Iron (Fe) | Balance | The base element of the alloy |
| Manganese (Mn) | ≤ 0.30 | Improves strength and toughness |
| Silicon (Si) | ≤ 0.30 | Enhances oxidation resistance and magnetic properties |
| Carbon (C) | ≤ 0.05 | Minimizes brittleness and improves machinability |
| Sulfur (S) | ≤ 0.02 | Controlled for purity and ductility |
| Phosphorus (P) | ≤ 0.02 | Kept at low levels to avoid negative effects on ductility |
Corresponding and Similar Grades to 1J50 Soft Magnetic Alloy
| Standard/Region | Grade Name | Notes |
|---|---|---|
| China (GB) | 1J50 | Official Chinese designation for this soft magnetic alloy |
| USA (ASTM, AISI) | Permalloy 50 | Commonly used in the US, also known as 50% Nickel Alloy |
| Germany (DIN) | Vacoflux 50 | German equivalent, often used in magnetic shielding |
| Russia (GOST) | 50Н | Russian equivalent, used in similar high magnetic performance applications |
| Japan (JIS) | PB50 | Japanese equivalent of 1J50, with similar magnetic properties |
| France (AFNOR) | AFNOR A50-50 | French standard for a soft magnetic alloy with 50% Nickel content |
| UK (BS) | Hiperco 50 | A similar high-performance soft magnetic alloy in the UK |
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We offer a wide variety of alloy products to meet your diverse needs. You can choose from different shapes and grades of alloys. With a large inventory of metal products, we can quickly fulfill your order requirements.
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1J50 Material Characteristics
1J50 alloy has a high saturation magnetic induction and magnetic permeability, making it an important magnetic material.
- High Magnetic Permeability: The high permeability of 1J50 alloy allows it to be used in the production of magnetic cores, inductors, sensors, and other magnetic components.
- High Saturation Magnetic Induction: With a saturation magnetic induction of up to 1.56T, 1J50 is a valuable material in magnetic applications.
- Low Coercivity: 1J50 alloy features low coercivity, making it easy to magnetize and demagnetize.
- Good Machinability: 1J50 is easy to process and shape, allowing it to be formed into a variety of complex parts and components.
- Excellent Thermal Stability: The alloy maintains stable performance in high-temperature environments, demonstrating good thermal stability.
1J50 Application Areas
1J50 is widely used in the electronics and instrumentation industry, as well as in various transformers, relays, and electromagnetic clutches that operate in moderate magnetic fields. Specific applications include the cores for these components, pole shoes, headphone diaphragms, relay parts for ground fault circuit breakers, gas valves, magnetic shielding, gyroscopes, automatic synchronous motors, and micro motors in electronic watches.
- Electronics: 1J50 alloy is used in the manufacture of magnetic heads, read/write heads, disk drives, and other electronic components.
- Telecommunications: It can be used in the production of high-precision antennas, signal amplifiers, filters, and other communication components.
- Aerospace: 1J50 is utilized in high-precision permanent magnets, sensors, solenoid valves, and other aerospace components.
- Defense: The alloy is applied in manufacturing high-precision radar systems, electronic countermeasure equipment, and other defense-related devices.
Heat Treatment Process for 1J50
| Heat Treatment Process | Details |
|---|---|
| Annealing medium | Dry hydrogen (dew point no more than -40°C) or vacuum, with a residual pressure of no more than 0.1 Pa |
| Heating temperature and speed | 1100~1150°C |
| Heat preservation (h) | 3~6 |
| Cooling speed | Cooled to 600°C at 100~200°C/h, then quickly cooled to 300°C before discharging from the furnace |
