4J58 (also known as 58FN or N58) is a special nickel-based alloy that is widely used in applications requiring excellent magnetic properties, particularly in precision instruments and electronics. It is a nickel-iron alloy that exhibits high permeability, low coercivity, and excellent temperature stability. Due to its unique properties, it is commonly used in applications where consistent magnetic behavior is critical.
Overview of 4J58 (58FN, N58) Nickel Alloy
4J58 is a high-permeability, low-carbon nickel-iron alloy. It is designed for use in magnetic shielding, high-sensitivity magnetometers, and other applications where low magnetic losses and stable performance are important. The alloy's magnetic properties make it suitable for use in magnetic components like sensors, transformers, and inductors, particularly in environments with varying temperatures.
Chemical Composition of 4J58 (58FN, N58)
| Element |
Percentage (%) |
| Nickel (Ni) |
58.0 - 60.0 |
| Iron (Fe) |
39.0 - 40.0 |
| Manganese (Mn) |
≤ 0.5 |
| Copper (Cu) |
≤ 0.3 |
| Carbon (C) |
≤ 0.05 |
| Silicon (Si) |
≤ 0.3 |
| Sulfur (S) |
≤ 0.01 |
| Phosphorus (P) |
≤ 0.02 |
Magnetic Properties
| Property |
Value |
| Magnetic Permeability |
80 - 100 (relative permeability) |
| Coercivity |
Low (10 - 30 Oe) |
| Saturation Magnetization |
0.55 - 0.6 T |
| Curie Temperature |
~450°C |
Mechanical Properties
| Property |
Value |
| Density |
8.2 g/cm³ |
| Tensile Strength |
520 - 700 MPa |
| Yield Strength |
300 - 500 MPa |
| Elongation |
30 - 50% |
| Hardness |
160 - 250 HB |
| Modulus of Elasticity |
~200 GPa |
| Melting Point |
~1400°C (2552°F) |
Key Properties
- High Permeability: 4J58 is well-known for its high magnetic permeability, which makes it an ideal material for magnetic shielding and sensors.
- Low Coercivity: The alloy exhibits low coercivity, meaning it requires very little energy to reverse its magnetic field. This makes it useful in electronic applications where low magnetic losses are essential.
- Stable Magnetic Properties: 4J58 maintains stable magnetic properties even at elevated temperatures, ensuring reliable performance in high-temperature environments.
- Temperature Stability: The alloy's magnetic properties are stable across a broad temperature range, which is important for many precision applications.
- Good Mechanical Properties: While primarily used for its magnetic properties, 4J58 also offers good mechanical strength, making it suitable for structural components as well.
Applications
- Magnetic Shielding: Used in high-precision instruments, electronic devices, and telecommunications to shield sensitive components from external magnetic fields.
- Magnetic Sensors: Found in magnetometers, inductive sensors, and other applications where accurate magnetic field measurement is necessary.
- Transformers and Inductors: Used in electrical components like transformers and inductors where consistent magnetic properties are required for efficient operation.
- Precision Electronics: Employed in electronics where temperature stability and low magnetic losses are crucial, such as in precision measurement devices and electric motors.
- Power Generation: Used in applications involving electromagnets and components requiring stable magnetic characteristics in high-temperature environments.
Shandong Titanium Nickel Special Steel Co., Ltd., registered funds (one thousand yuan for 10,000 yuan), the company is mainly committed to high -tech enterprises that are integrated with special alloy materials, specializing in the research and sales of special alloys such as nickel -based and iron -based. Products include corrosion-resistant alloys, superalloys, precision alloys, Hastelloy, Monel, INCONEL, INCOLOY, copper-nickel alloys, titanium and titanium alloys, zirconium and zirconium alloys, nickel and nickel-based alloys, nickel-cobalt-based heat-resistant alloys , Hafnium alloy, etc., more than 60 kinds of alloy materials such as special stainless steel. On the basis of stabilizing the quality of the original products, according to the market demand, it solves the quality problems existing in the traditional metallurgical process, and ensures the low miscellaneous and low deflection of the alloy material products, which has won an excellent reputation in the industry.
Product Description
| Property |
|
Precision Alloy Steel Sheets |
| Material Composition |
|
Similar to strips, precision alloy sheets are made from carefully controlled compositions, often with low expansion coefficients or specialized magnetic properties, such as Invar or Mu-metal. |
| Thickness |
|
Precision alloy sheets are thicker than strips, typically ranging from 0.5 mm to several millimeters, depending on mechanical and thermal property requirements. |
| Applications |
|
Commonly used in industries such as aerospace, electronics, and medical devices for components like structural parts, enclosures, and sensitive instrumentation that require controlled mechanical properties and dimensional accuracy. |
| Mechanical Properties |
|
High tensile strength, excellent flatness, and precision in dimensions. These sheets offer stable mechanical properties under both high and low temperature conditions. |
| Thermal Properties |
|
Similar to strips, these sheets are designed for specific thermal behaviors, such as low expansion or high-temperature stability, depending on the alloy (e.g., Invar, Mu-metal). |
| Electrical Properties |
|
Precision alloys in sheet form may also have controlled electrical resistance, especially for applications in sensitive electronics or electrical components. |
| Magnetic Properties |
|
Similar to strips, magnetic alloys like Mu-metal sheets are used for shielding in sensitive equipment to control or eliminate external magnetic interference. |
| Forming & Fabrication |
|
Precision alloy sheets can be cold-rolled, heat-treated, laser-cut, or stamped. They are suitable for both complex shapes and applications requiring high dimensional tolerance and material consistency. |
| Heat Treatment |
|
Heat treatments like solution annealing or stress-relief are common for precision alloy sheets to improve properties such as strength, stability, and resistance to thermal expansion. |
| Welding & Joining |
|
Precision alloy sheets can be welded or brazed, although welding requires careful control of heat to avoid compromising the alloy's properties. |
| Examples of Alloys |
|
Invar, Mu-metal, Kovar, Constantan, Permalloy |
| Cost |
|
Precision alloy sheets are also expensive, as they require precise manufacturing and composition control. Their cost is higher than standard steel or non-precision alloys. |
| Common Standards |
|
ASTM A-240, ASTM B-637, ASTM B-553, AMS 5525 |
Detailed Photos
Key Advantages:
- Controlled Properties: Tailored for specific applications, offering controlled expansion, high strength, or high electrical conductivity.
- Dimensional Stability: Excellent flatness, accuracy, and stability, even under thermal cycling.
- High Durability: Resistant to thermal, mechanical, and magnetic stresses, making them suitable for critical components in sensitive environments.
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Packaging & Shipping
FAQ
1: What is precision alloy?
Precision alloys refer to special alloys with high purity, uniformity and stability. They are usually used to manufacture parts or components that have extremely strict size, shape and performance requirements. They have special physical properties (such as magnetic, electrical, thermal, etc.) and chemical properties to meet specific engineering requirements.
2: What are the main types of precision alloys?
Precision alloys can be divided into many types according to their different physical properties, mainly including:
Magnetic alloys: Such as soft magnetic alloys and permanent magnetic alloys (hard magnetic alloys).
Elastic alloy: An alloy that can deform reversibly under certain stress or temperature conditions.
Expansion alloy: An alloy with a large linear expansion coefficient within a certain temperature range.
Thermal Bimetal: A composite material composed of two or more metallic materials that exhibit different thermal expansion properties.
Resistive Alloys: Alloys with stable resistivity and constant temperature coefficient of resistance.
Thermoelectric alloy: Alloy with thermoelectric effect.
Hydrogen storage alloy: An alloy with hydrogen storage function.
Shape memory alloy: Alloys with shape memory effect.
Magnetostrictive alloy: A type of metal material with magnetostrictive effect.
3: What are the main application areas of precision alloys?
Precision alloys are widely used in aerospace, automobiles and trains, energy and chemicals, medical equipment, electronics industry, fasteners and other fields. For example, in the aerospace field, precision alloys are used to manufacture aircraft engines, aviation structural parts, missiles, etc.; in the automotive and train field, they are used to manufacture engines, transmission systems, chassis components, tracks, wheels, etc.
4: What is the production process of precision alloy?
The production process of precision alloys includes the selection and pretreatment of alloy raw materials, smelting and casting, heat treatment and processing technology, as well as surface treatment and performance testing. The entire production process requires precise control of each link to ensure that the composition and performance of the alloy meet the requirements.
5: How to detect the quality of precision alloy?
Quality testing of precision alloys is mainly through chemical analysis and physical property testing. Commonly used testing methods include spectral analysis, tensile testing, hardness testing and low-temperature impact testing to ensure that each batch of alloys can meet predetermined technical requirements.
6: What are the significant advantages of precision alloys?
Advantages of precision alloys include:
Has unique physical properties, such as excellent electrical conductivity, thermal conductivity and magnetism.
Excellent mechanical properties, high strength, wear resistance and good elasticity.
Strong corrosion resistance and long service life.
Stable performance in a wide temperature range and wide application.
It has good processing performance and is easy to manufacture precisely.
The ingredients and organization are controllable to meet diverse needs.
7: What kind of performance does precision alloy show in a magnetic field?
Magnetic alloys in precision alloys exhibit excellent magnetic properties in magnetic fields. For example, soft magnetic alloys have high magnetic permeability and low coercivity, are easy to demagnetize, and have low energy loss during cyclic magnetization, making them indispensable materials in electromagnetic equipment.
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