Have you ever noticed what the metallic texture of a train is ? This texture can be found on doors of underground trains. When your face is pushed to a train door during rush hours, you will discover the surface of train doors are covered with well aligned tiny crosses.

Obviously, it is an aluminum foil with a lot of wrinkles. It keeps the high reflectivity of aluminum though it is highly crumpled.

It is a plain metal plate having uneven surface. It is highly oxidized. It is not as reflective as new metal, but it still has a little glossiness.

As usual, highly oxidized iron comes with rust.

This metal pattern exists in many places, e.g. floors of elevators. It is the most typical 5-strip pattern for increasing fiction.

It is not just a metal plate, but also a rusty texture. Dirt is also on the surface.

It is a plain iron metal. The surface tells it is highly oxidized leaving only a few shiny areas.

Besides, the surface is covered with rust and dirt.

It is a rusty metal plate with typical cross patterns cover the whole surface. The bumpy cross pattern is used to increase the fiction and grip of metal especially when it is being used for flooring.

Dirt can also be found on the texture.