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Non-Magnetic Fasteners from China Suppliers - Precision Machinery & Aerospace Factory Solutions
Products Features
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1Magnetic-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.
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2Austenitic Stainless Steel (e.g. 302HQ) Usually exhibits non-magnetic or weak magnetic properties, making it suitable for applications in electronic instruments and other scenarios.
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3Advantages 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.): Enhanced in corrosion resistance by adding elements like Mo and Cu, with excellent cold working properties. -
4Processing and Usage Precautions Stainless steel fasteners may exhibit slight magnetic property 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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1. 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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2. 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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3. Radar Equipment
High-frequency signal transmission components need to be connected through non-magnetic connectors to reduce signal distortion.
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4. Precision Instruments
High-precision electronic measuring equipment (such as spectrometers) uses non-magnetic connectors to prevent signal drift.
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5. 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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6. 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)
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What makes titanium alloy fasteners non-magnetic?
Titanium is an inherently non-magnetic metal. Titanium alloy fasteners retain this property, making them completely free from magnetic interference. This is why they are widely used in precision machinery, aerospace, and medical applications where magnetic neutrality is critical.
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Why do some stainless steel fasteners become slightly magnetic after processing?
During the cold heading process, mechanical stress can cause a partial microstructural transformation in austenitic stainless steel, resulting in slight magnetic behavior. This is a processing effect — not a material defect — and does not affect the overall non-magnetic classification of the material.
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Which non-magnetic fastener material is best for MRI equipment?
For MRI equipment, titanium alloy fasteners and PEEK (Polyether ether ketone) non-magnetic fasteners are most commonly recommended. They ensure zero interference with the magnetic field uniformity, which is essential for accurate imaging results.
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What is the difference between A286 and standard stainless steel fasteners?
A286 is a high-performance iron-nickel-chromium superalloy specifically designed for high-temperature and high-strength applications. Compared to standard stainless steel (e.g., 304 or 316), A286 offers superior tensile strength, excellent oxidation resistance at elevated temperatures, and reliably non-magnetic properties, making it ideal for aerospace and turbine applications.
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How can I verify the authenticity of non-magnetic stainless steel fasteners?
Authenticity should be verified through official material certifications (mill test reports), third-party chemical composition testing, and assessment of manufacturing craftsmanship. Be cautious of products marketed as "non-magnetic and non-nickel" stainless steel, as these may not meet the required standards for critical applications.
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Are non-magnetic fasteners suitable for marine or chemical environments?
Yes. Titanium alloy fasteners in particular offer outstanding corrosion resistance in seawater and aggressive chemical environments. Austenitic stainless steel grades enhanced with molybdenum (Mo) and copper (Cu), such as 316, also perform well in corrosive conditions, making them a reliable choice for marine and chemical industry applications.