{
  "id": "materials:yshield-m6l-9x",
  "collection": "materials",
  "slug": "yshield-m6l-9x",
  "name": "YSHIELD M6L-9X magnetic shielding film",
  "summary": "Six-layer 0.5 mm magnetic shielding film declared at 20 dB single layer rising to 33 dB in four layers, quoted by the manufacturer as a field-amplitude reduction of 89.4% to 97.7%.",
  "status": "verified",
  "lastVerified": "2026-08-12",
  "data": {
    "aliases": [
      "M6L-9X",
      "M6L"
    ],
    "manufacturer": "YSHIELD GmbH & Co. KG",
    "model": "M6L-9X",
    "materialClass": "shielding-mu-metal",
    "targets": [
      "elf-magnetic"
    ],
    "attenuation": [
      {
        "db": 20,
        "frequency": "power frequency (50/60 Hz) magnetic field",
        "configuration": "single layer",
        "quantity": "magnetic-flux-density"
      },
      {
        "db": 26,
        "frequency": "power frequency (50/60 Hz) magnetic field",
        "configuration": "two layers",
        "quantity": "magnetic-flux-density"
      },
      {
        "db": 30,
        "frequency": "power frequency (50/60 Hz) magnetic field",
        "configuration": "three layers",
        "quantity": "magnetic-flux-density"
      },
      {
        "db": 33,
        "frequency": "power frequency (50/60 Hz) magnetic field",
        "configuration": "four layers",
        "quantity": "magnetic-flux-density"
      }
    ],
    "testMethod": "Manufacturer-declared magnetic-field attenuation per layer count with the corresponding percentage reduction in field amplitude; amplitude ratios, not power ratios.",
    "construction": "Six-layer high-permeability alloy film laminated on both sides for use as an intermediate layer in walls, roofs and floors.",
    "thickness": "0.5 mm",
    "requiresGrounding": false,
    "application": [
      "Intermediate layer in wall, roof or floor build-ups",
      "Shielding a room from a transformer or busbar on the other side of a wall",
      "Vehicle and industrial installations"
    ],
    "limitations": [
      "Diverts flux rather than blocking it: the film has to be between the source and the occupied space, and a partial panel leaves the field around its edges",
      "Diminishing returns with layers — four layers add 13 dB over one, so the geometry and the distance to the source matter more than stacking material",
      "Kinking, folding or mechanical shock reduces permeability permanently and invisibly",
      "Declared per flat layer in a laboratory fixture; an installed result has to be verified with a gaussmeter before and after",
      "No RF claim: this is a power-frequency magnetic-field product"
    ],
    "related": [
      "shielding:high-permeability-alloy",
      "quantities:attenuation",
      "quantities:magnetic-flux-density"
    ]
  },
  "sources": [
    {
      "id": "yshield-product-overview",
      "title": "YSHIELD product overview with technical data and shielding attenuation",
      "publisher": "YSHIELD GmbH & Co. KG",
      "url": "https://www.yshield.de/pdf/YSHIELD-Produktuebersicht-Productoverview.pdf",
      "year": 2026,
      "kind": "manufacturer",
      "retrieved": "2026-08-12"
    }
  ],
  "links": {
    "self": "https://emfbase.com/api/materials/yshield-m6l-9x",
    "html": "https://emfbase.com/materials/yshield-m6l-9x",
    "markdown": "https://emfbase.com/materials/yshield-m6l-9x.md",
    "collection": "https://emfbase.com/api/materials"
  }
}