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Non-Magnetic Fasteners from China: Top Suppliers & Factory for Precision Machinery and Aerospace Applications
Products Features
1
Magnetic-free Characteristic
Titanium alloy fasteners take advantage of the completely non-magnetic property of titanium metal, which makes them suitable for precision machinery and aerospace applications, avoiding magnetic interference to the equipment.
2
Austenitic Stainless Steel (e.g. 302HQ)
Usually exhibits non-magnetic or weak magnetic properties, making it suitable for applications in electronic instruments and other scenarios.
3
Advantages of Material Properties
Titanium alloy: Low density, high strength, strong corrosion resistance (especially suitable for seawater and chemical environments), and high temperature resistance (maintains performance at 500℃).
Austenitic stainless steel: Such as 304, 316, etc. These are enhanced in corrosion resistance by adding elements like Mo and Cu, and they also have excellent cold working properties.
Austenitic stainless steel: Such as 304, 316, etc. These are enhanced in corrosion resistance by adding elements like Mo and Cu, and they also have excellent cold working properties.
4
Processing and Usage Precautions
Stainless steel fasteners may exhibit slight magnetic properties after cold heading due to processing stress — this is not a material defect. Be vigilant against the low-quality trap of "non-magnetic and non-nickel" stainless steel. Authenticity should be determined through material certification and craftsmanship assessment.
Application
Non-magnetic fasteners, due to their unique anti-magnetic interference properties, play an irreplaceable role in precision instruments, medical equipment, aerospace and other fields.
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MRI Equipment
Used for fixation of the magnetic resonance imaging system to prevent ferromagnetic materials from interfering with the uniformity of the magnetic field and to ensure imaging accuracy.
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Navigation System
Components of satellites and aircraft should be made of non-magnetic materials (such as beryllium-cobalt copper C17500) to avoid interfering with gyroscopes and magnetometers.
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Radar Equipment
High-frequency signal transmission components need to be connected through non-magnetic connectors to reduce signal distortion.
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Precision Instruments
High-precision electronic measuring equipment (such as spectrometers) uses non-magnetic connectors to prevent signal drift.
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Quantum Laboratory
Superconducting quantum bits are extremely sensitive to magnetic fields. Non-magnetic fasteners (such as PEEK material) are essential components.
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Wind Power Equipment
Amorphous alloy bolts are used for the transformer core to reduce eddy current losses.
Our Non-Magnetic Series Stainless Steel Mainly Includes the Following
| Main Types of Non-Magnetic Fasteners | ||
|---|---|---|
| A286 | 1.498 | Gr.660 |
| OCr21Ni6Mn9N | OCr16Ni22Mn9Mo2 | 1.4436 |
Frequently Asked Questions (FAQ)
Q
What makes titanium alloy fasteners non-magnetic?
Titanium is an inherently non-magnetic metal. Its atomic structure does not support ferromagnetism, which means titanium alloy fasteners produce no magnetic field and are unaffected by external magnetic fields — making them ideal for sensitive electromagnetic environments.
Q
Why do some stainless steel fasteners become slightly magnetic after processing?
During cold heading or other cold-working processes, austenitic stainless steel can undergo a partial phase transformation from austenite to martensite due to mechanical stress. This induced martensite is slightly magnetic. However, this is a processing effect, not a fundamental material defect, and does not affect performance in most applications.
Q
What is the difference between A286 and standard stainless steel fasteners?
A286 is an iron-nickel-chromium superalloy known for its excellent strength at elevated temperatures, good oxidation resistance, and non-magnetic properties. Compared to standard stainless steel grades like 304 or 316, A286 offers superior performance in high-temperature and high-stress environments, such as aerospace and gas turbine applications.
Q
Are non-magnetic fasteners suitable for use in MRI rooms?
Yes. Non-magnetic fasteners made from titanium alloy, PEEK, or specific austenitic stainless steel grades are safe for use in MRI environments. They do not attract to the MRI magnet, do not distort the magnetic field, and will not interfere with imaging quality — all critical requirements for medical facility installations.
Q
How can I verify that a stainless steel fastener is truly non-magnetic?
The most reliable methods include reviewing the material test certificate (MTC) to confirm the alloy grade and composition, using a calibrated gaussmeter to measure residual magnetism, and verifying the manufacturing process to ensure no cold-working steps introduced martensitic transformation. Avoid relying solely on a simple magnet test, as it may not detect weak magnetism.
Q
What industries most commonly use non-magnetic fasteners?
Non-magnetic fasteners are most widely used in aerospace and defense (navigation systems, radar), medical equipment (MRI machines), scientific research (quantum labs, spectrometers), energy (wind power transformers), and advanced electronics. Any application where magnetic interference could compromise safety, accuracy, or performance requires non-magnetic fastening solutions.