Rasagar/Library/PackageCache/com.unity.render-pipelines.high-definition/Documentation~/snippets/shader-properties/autodesk-interactive/metallic-map.md

MetallicMap The texture that defines the metallic value of the surface.
If you disable UseMetallicMap, HDRP ignores this property.
Note that HDRP only uses the red channel of this texture to determine the metallic value of the material's surface.