Is It Legal to Ship Neodymium Magnets? IATA PI 902, Flux Limits & Shielding Guide

You have successfully negotiated the order, the neodymium magnets¹ are manufactured perfectly, and you are ready to ship. But suddenly, your freight forwarder rejects the cargo, or worse, it gets detained by customs.

Why does this happen? Because shipping strong permanent magnets isn't just about throwing them in a sturdy box. It involves strict aviation safety regulations and, more critically today, severe export controls².

Quick answer: Yes, it is legal to ship neodymium magnets—provided you meet strict regulatory limits. For air freight, the package's external stray magnetic field must be below specific thresholds (e.g., <0.002 gauss at 7 ft or <0.00525 gauss at 15 ft). You must use magnetic shielding packaging³, provide a third-party composition analysis report⁴, and obtain an official air transport identification report. Furthermore, you must ensure your specific magnets are not restricted under current export control laws regarding controlled elements.

As an expert magnet manufacturer, I see buyers stumble over logistics every day. A delayed shipment destroys your production schedule and damages your relationship with your customers. Let us break down the exact rules, the harsh realities of current export controls², and the step-by-step process to get your magnets shipped legally and safely.

The Hard Reality: Export Controls and Composition Reports

Before we even talk about airplanes and magnetic fields, we must address the most critical hurdle in today’s geopolitical climate.

Currently, magnets containing certain controlled rare-earth elements or intended for specific sensitive applications cannot be exported.

Customs authorities are extremely strict about this. You cannot simply declare "magnets" and expect them to sail through.

To prove your shipment is legal for export, you are now required to provide a third-party composition analysis report. This report verifies the exact chemical makeup of your NdFeB magnets⁵, proving they do not contain prohibited levels of controlled elements.

What you should do:

1. Check early: Before placing a massive order, confirm with your manufacturer if the required grade contains controlled heavy rare earths.
2. Get the report: Ensure your supplier partners with authorized laboratories to provide the necessary third-party composition analysis report. No report, no export.
3. Explore alternatives: If your required material is restricted, work with your engineering team to see if a non-restricted grade or an alternative magnetic circuit design can achieve the same performance.

Air Freight Rules: Magnetic Shielding is Non-Negotiable

If your magnets clear export controls² and you need them shipped by air, you face the International Air Transport Association (IATA) regulations. Strong magnetic fields can interfere with an airplane's navigation and control systems. Therefore, IATA classifies magnetic materials under Dangerous Goods (Class 9)⁶ unless specific conditions are met.

To ship magnets by air, magnetic shielding packaging³ is absolutely mandatory.

You cannot ship raw, unshielded NdFeB magnets on a plane. The magnetic flux must be contained. We achieve this by creating a "Faraday cage⁷" effect using high-permeability materials like cold-rolled steel plates or galvanized iron sheets inside the carton.

The IATA PI 902 Thresholds

Here is how your shipment is classified based on the magnetic field strength⁸ measured from the surface of the package:

Measurement Distance	Magnetic Field Strength	Classification & Action
At 15 feet (4.6m)	> 0.00525 gauss (0.418 A/m)	Forbidden for Air Transport. You must add more shielding or ship by sea/ground.
At 7 feet (2.1m)	> 0.002 gauss (0.159 A/m) but passes the 15 ft test	Class 9 Dangerous Goods. Allowed, but requires DG declaration, special handling, and "Magnetized Material" labels.
At 7 feet (2.1m)	< 0.002 gauss (0.159 A/m)	General Cargo. Not restricted. Can be shipped as standard freight.

Your goal is always to add enough shielding to pass as General Cargo, saving you significant dangerous goods surcharges and handling delays.

How to Comply: The Step-by-Step Shipping Process

Do not leave packaging to a standard warehouse worker. Shipping magnets requires an engineered approach.

Step 1: Arrange the Magnets Correctly Never pack magnets with all the North poles facing the same way. This compounds the magnetic field. You must arrange the magnets in alternating polarities (North-South-North-South) so their magnetic fields cancel each other out as much as possible before they even touch the packaging.

Step 2: Design the Shielding Packaging Wrap the magnets in thick foam to keep them away from the edges of the box (distance weakens magnetic fields rapidly). Then, line the inside of the outer carton with sheets of iron. For powerful N52 magnets, you may need multiple layers of iron sheets.

Step 3: Secure the Load If the magnets shift during transit and touch the iron shielding directly, the magnetic field will leak outside the box. The internal foam must completely immobilize the heavy magnets.

Step 4: Obtain the Air Transport Identification Report⁹ Airlines will not take your word for it. You must send a packed sample (or have an inspector visit your site) to a civil aviation-approved testing company. They will measure all six sides of your box with a milligauss meter. If it passes, they will issue an Air Transport Conditions Identification Report, which is usually valid for one year.

Air vs. Sea vs. Postal: Choosing the Right Strategy

• Air Freight (FedEx, UPS, DHL, Commercial Airlines): Fastest, but most expensive and strictest. Requires third-party composition reports, shielding, and official magnetic testing reports.
• Sea Freight & Ground Transport: Much more relaxed. The magnetic fields do not pose a navigation risk to ships or trucks. While usually treated as non-dangerous goods, we still strongly recommend basic shielding so your pallets don't stick to the side of the shipping container or damage adjacent cargo. If your cargo fails the air freight limits, sea freight is your fallback plan.
• USPS (Postal Service): Governed by USPS Packaging Instruction 9B¹⁰. They accept magnetized materials domestically if they meet the 0.002 gauss at 7 feet rule. However, international postal shipments of restricted magnetic materials are often highly scrutinized or rejected.

Common Pitfalls That Ruin Magnet Shipments

1. Ignoring the "Air Gap": Buyers often calculate shielding based solely on the iron thickness. They forget that adding foam (an air gap) between the magnet and the iron shield drastically reduces the external magnetic field.
2. Outdated Reports: Magnetic test reports are typically only valid for the current calendar year. Do not try to use a 2023 report for a 2024 shipment.
3. Assuming Small Magnets are Safe: A thousand tiny N52 magnets packed improperly can generate a larger stray field than one large magnet. Every box must be tested.

Stop Struggling with Magnet Logistics

At MagniPro, we are not just experts in manufacturing high-quality NdFeB magnets; we are experts in global delivery.

We solve these headaches for you. We provide the necessary third-party composition analysis reports to navigate export controls². We engineer the magnetic shielding packaging³ specifically for your order, and we handle the magnetic testing to secure the Air Transport Identification Report⁹s.

You focus on your product design; we will make sure the components actually arrive at your assembly line.

Need a reliable, compliant magnet supplier? Submit your magnet specifications and destination today, and our team will provide a comprehensive manufacturing and shipping solution within 24 hours.

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