Rusty Paint material for Substance Designer and Substance Painter.
Video demonstration: https://youtu.be/SY2r7fvRLvI
.sbs file with material graph for Substance Designer.
.sbsar file for Substance Painter and other compatible software.
.spsm smart material for Substance Painter.
Material is very flexible. Paint and rust colors, rust amount, leaks and streaks are adjustable. Paint can use image input and rust can use mask input. Leaks follow gravity when tri-planar mode is enabled.
Artstation page: https://www.artstation.com/artwork/Xrody