Materials

1. Metals

1.1. Any of a number of chemical elements, such as iron or copper, that are often lustrous ductile solids, have basic oxides

1.1.1. Ferrous

1.1.1.1. containing or relating to iron

1.1.1.1.1. Iron

1.1.2. Non-Ferrous

1.1.2.1. containing little or no iron

1.1.2.1.1. zinc

1.1.2.1.2. tin

1.1.2.1.3. Aluminium

1.1.2.1.4. Copper

1.1.3. Alloy

1.1.3.1. a chemical element that is a reddish-brown metal, used especially for making wire and coins

1.1.3.1.1. steel

1.1.3.1.2. brass

1.1.3.1.3. Bronze

1.1.3.1.4. Aluminio

2. Polymer materials

2.1. a chemical substance consisting of large molecules made from many smaller and simpler molecules

2.1.1. Plastic

2.1.1.1. an artificial substance that can be shaped when soft into many different forms and has many different uses

2.1.1.1.1. PVC

2.1.2. Rubber

2.1.2.1. an eraser

3. Ceramic

3.1. the objects produced by shaping and baking clay, especially when considered as art

4. Composite materials

4.1. When the material system has identical properties and chemical composition in all its points, it is referred to as a homogeneous material system. This means that the homogeneous material system has a single phase, whether gaseous, liquid or solid.

4.1.1. concreate

4.1.1.1. a very hard building material made by mixing together cement, sand, small stones, and water