Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Metal Specified Shader Smart, Standard Edition Free.
Metal Specified Shader Smart, Standard Edition
This package contains a set of 12 shaders for PBR based shaders made specifically for rusty and polished metal materials. 6 shaders with ambient occlusion and upgraded features are designed for PC/Console, and 6 are designed for mobile game and application development.
Far field differentiation has been introduced to Base shaders, where the color and roughness fall off into static and uniform values, respectively; meantime, users can adjust the decay and vanish distance, where all far field differentiation functionality transfers between states seamlessly. In addition, Secondary normal is introduced to this version, where, a secondary normal bias, and its secondary to primary ratio is adjustable as well.
High customizable adjustments are introduced as well, including: contrast, brightness, gray-level strength, maximum/minimum channel values (for linear interpolation 1.0 and 0.0), and normal bias. Users can modify most of the texture input properties in real time.
Varies input functionalities are introduced to each shader for optimizations of the rendering power, and enhancements for the graphic quality.
Albedo: Color Bias | Contrast | Brightness
Far Field Differentiation: Far Field Color Bias | Uniform Roughness at Far Field | Decay/Vanish Distance | Fall-off rate
Metallic: Contrast | White/Black Channel Strength | Threshold | Strength | Shift
Roughness: Contrast | White/Black Channel Strength | Strength
Normal: Strength | Bias
Secondary Normal: Strength | Bias | Secondary to Primary Ratio
Ambient Occlusion: Contrast | Base Value
Texture Coordinates: Rotation | UV Tiling | UV Offset
Metallic generated from the Roughness is introduced to some shaders
Roughness generated from the Metallic is introduced to some shaders
Uniform metallic adjustment is introduced to some shaders
Uniform roughness adjustment is introduced to some shaders
Tech Details and Specifications
Numbers of Shaders: 12
Numbers of Sample Materials: 6
Numbers of Sample Textures: 7
Numbers of Demo Scenes: 4
Numbers of Demo Assets: 1 (background material)
Number of Display Cameras: 20
Far Field Differentiation | Secondary Normal
PBR Based Rendering
SM 3.0 | Full Forward Shadows | Standard Specular
Supported Platforms: PS4 | Xbox One | PC | iOS | Android
Render Type: Opaque