Metal surface and process for treating a metal surface

A substrate, comprising:

• a first surface portion having a first texture and an overlaying first anodized layer, the first anodized layer characterized as having a first abrasion resistance;
• a second surface portion having a second texture and an overlaying second anodized layer, the second anodized layer characterized as having a second abrasion resistance different from the first abrasion resistance, wherein the first surface portion abuts the second surface portion at a texture boundary, and wherein the first anodized layer abuts the second anodized layer at a layer boundary that coincides with the texture boundary;
• a third surface portion having a third texture;
• and
• a fourth surface portion having a fourth texture, wherein the first, second, third, and fourth textures have different surface qualities.

A metal article including:

• a first surface portion having a first texture;
• a second surface portion abutting the first surface portion at a texture boundary and having a second texture;
• a third surface portion adjacent to the first surface portion and having a third texture;
• a fourth surface portion adjacent to the third and second surface portions and having a fourth texture, wherein the first, second, third, and fourth textures have different surface qualities;
• a first oxide layer formed on the first surface portion;
• and
• a second oxide layer formed on the second surface portion, wherein the second oxide layer meets the first oxide layer at an oxide layer boundary that coincided with the texture boundary.

A housing for an electronic device, the housing comprising:

• a first surface portion having a first texture;
• a second surface portion having a second texture;
• a third surface portion having a third texture;
• a fourth surface portion having a fourth texture, wherein the first, second, third and fourth textures have different surface qualities, wherein one of the first, second, third, and fourth surface portions abuts another one of the first, second, third, and fourth surface portions at a texture boundary;
• a first anodized layer overlaying one of the first, second, third, and fourth surface portions;
• and
• a second anodized layer overlaying another one of the first, second, third, and fourth surface portions such that the first anodized layer abuts the second anodized layer at a layer boundary that coincides with the texture boundary.