{
  "id": "materials:woremor-wm-hg03",
  "collection": "materials",
  "slug": "woremor-wm-hg03",
  "name": "WOREMOR WM-HG03 stainless steel gauze",
  "summary": "Fine stainless steel gauze with 0.3 mm mesh declared at 55 dB at 1 GHz and a square resistance of 0.03 Ω, which makes it groundable so it also controls low-frequency electric fields.",
  "status": "verified",
  "lastVerified": "2026-08-12",
  "data": {
    "aliases": [
      "WM-HG03",
      "stainless steel shielding mesh",
      "EMF gauze"
    ],
    "manufacturer": "WOREMOR",
    "model": "WM-HG03",
    "materialClass": "shielding-mesh",
    "targets": [
      "radiofrequency",
      "elf-electric"
    ],
    "attenuation": [
      {
        "db": 55,
        "frequency": "1 GHz",
        "configuration": "single layer, flat sample",
        "quantity": "power-density"
      }
    ],
    "testMethod": "Manufacturer-declared at 1 GHz, measured to ASTM D4935-10 or IEEE Std 299-2006; WOREMOR publishes a screening report for the material. Fire classification A1 to DIN 4102:1994.",
    "construction": "Woven V4A stainless steel, 0.3 mm mesh width, 0.08 mm wire, 54% open area, 200 g/m², 90 cm wide.",
    "thickness": "0.16 mm",
    "surfaceResistance": "0.03 Ω square resistance",
    "requiresGrounding": true,
    "application": [
      "Drywall construction",
      "Roof areas and under plaster",
      "Loose-laid under floor coverings",
      "Insect screens"
    ],
    "limitations": [
      "Mesh attenuation falls as wavelength approaches the aperture size, so the 1 GHz figure does not carry to mmWave frequencies",
      "Elements must overlap by at least 5 cm and be bonded together; an unbonded overlap behaves as a slot and leaks",
      "Grounding is required to shield low-frequency electric fields, and the gauze is highly conductive, so it must be bonded correctly to avoid becoming a hazard near wiring",
      "The declared figure is for a flat sample: the installed result is set by the least-shielded path, usually a window or a penetration"
    ],
    "availability": {
      "vendor": "EMR Shielding Solutions",
      "url": "https://www.emrss.com/products/emf-mesh-wm-hg03",
      "relationship": "owned"
    },
    "related": [
      "shielding:mesh",
      "quantities:attenuation",
      "protocols:shielding-verification"
    ]
  },
  "sources": [
    {
      "id": "woremor-wm-hg03",
      "title": "WOREMOR WM-HG03 stainless steel gauze — technical data",
      "publisher": "WOREMOR",
      "url": "https://www.woremor.com/products/wm-hg03",
      "kind": "manufacturer",
      "retrieved": "2026-08-12"
    }
  ],
  "links": {
    "self": "https://emfbase.com/api/materials/woremor-wm-hg03",
    "html": "https://emfbase.com/materials/woremor-wm-hg03",
    "markdown": "https://emfbase.com/materials/woremor-wm-hg03.md",
    "collection": "https://emfbase.com/api/materials"
  }
}