How to air freight magnetic steel?

http://www.magnet-forever.comDue to the interference of weak stray magnetic fields on aircraft navigation systems and control signals, the International Air Transport Association (IATA) classifies magnetic cargo as Class 9 dangerous goods and must be restricted during transportation. So now, some air cargo with magnetic substances need to undergo magnetic testing to ensure the normal flight of the aircraft. Magnetic materials, audio materials, and other instruments containing magnetic accessories must undergo magnetic testing. According to the relevant provisions of IATA902, if the maximum magnetic field strength measured at a distance of 2.1m from the tested object does not exceed 0.159A/m (200nT, equivalent to 2mGs=0.002Gs), the item is not restricted as a magnetic substance and can be treated as general cargo. If the maximum magnetic field strength measured at a distance of 2.1m from the tested object exceeds 0.159A/m, but any magnetic field strength at a distance of 4.6m from the surface of the tested object is less than 0.418A/m, the goods can be transported as dangerous goods. If this requirement cannot be met, the goods are strictly prohibited from being transported by air. How to meet the air transportation standards? In order to meet the above air transportation requirements, it is necessary to demagnetize the magnets for air transportation. Although it is called demagnetization, it is not actually demagnetization treatment of the magnets, but to make the magnetic display on the packaging meet the national aviation safety transportation requirements. Shielding packaging is usually made of highly magnetic materials such as cold-rolled sheets, galvanized sheets, etc. If the amount of magnetic material is large, several layers of packaging are required. The magnetic permeability of high permeability materials is very high. According to the Faraday cage principle, the magnetic field mainly circulates inside the box after packaging, and there is very little leakage. Use cardboard or wooden boxes to package the shielding packaging.

Airlines or logistics companies that transport magnetic materials will require customers to undergo magnetic testing and issue an "Air Transport Condition Identification Report" to ensure the normal flight of the aircraft. Air transport appraisal can generally only be issued by qualified professional appraisal companies recognized by the domestic civil aviation management authority, and generally requires sending samples to the appraisal company for professional testing and then issuing an appraisal report. If it is inconvenient to send samples, professional personnel from the appraisal company will conduct on-site testing and issue an appraisal report. The validity period of the appraisal report is generally used in the current year, and after a new year, it is generally necessary to redo it.

When conducting magnetic testing, customers need to package the goods according to air transportation requirements. The testing will not damage the packaging of the goods. In principle, the testing will not open the boxes of the goods, but only conduct stray magnetic field testing on the six sides of each item. If the magnetic inspection of the goods is not qualified, special attention should be paid. Firstly, with the consent of the customer, the magnetic inspection staff will be commissioned to open the box and inspect the goods, and then provide relevant reasonable suggestions based on the specific situation. If the shielding can meet the requirements of air transportation, the goods will be shielded according to the customer's request and relevant fees will be charged. Sending to China: Mainstream logistics companies such as SF Express and Shentong do not accept air waybills for magnetic materials and can only use land transportation; EMS, if the customer can provide an Air Transport Condition Identification Report, the courier will determine whether the package can be received based on the situation. Sending abroad: Both DHL and UPS require customers to undergo magnetic testing. DHL can act as an agent to apply for testing, and the cost will be paid by the customer.