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==Definition==
A '''Material Class''' is a broad category used to group materials based on their fundamental physical and chemical properties. These classes represent the overarching types of materials, such as metals, polymers, ceramics, wood, textiles, and composites, each of which shares common characteristics like structure, composition, and performance. Within each material class, materials are further subdivided into material families and material types, reflecting more specific properties, applications, and variations.

Material classes are used in various fields, including manufacturing, packaging, and engineering, to classify materials for specific uses, regulatory considerations, and environmental impacts (e.g., recyclability and sustainability).

==Most common classses==
===Polymers (Plastics)===
'''Polymers''', often referred to as '''plastics''', are a class of materials made up of long, repeating chains of molecules. These materials can be natural (like rubber) or synthetic (like polyethylene, polypropylene). Polymers are versatile, lightweight, and can be molded into various forms, making them widely used in packaging, textiles, electronics, and construction. Based on their behavior when heated, they are classified into thermoplastics (which soften when heated) and thermosetting polymers (which set permanently after being formed).
===Metals===
'''Metals''' are a class of materials characterized by their metallic bonding, high electrical and thermal conductivity, and malleability. Metals are typically strong, ductile, and capable of being formed into various shapes. They are divided into two main families: ferrous metals (which contain iron, such as steel) and non-ferrous metals (such as aluminum, copper, and titanium). Metals are widely used in construction, manufacturing, packaging (e.g., cans, foils), and industrial applications due to their strength, durability, and recyclability.
===Textiles===
A textile is any material made of interlacing fibers, threads, or yarns to form a flexible fabric. Textiles can be created through processes such as weaving, knitting, crocheting, knotting, or felting. They are typically made from natural fibers like cotton, wool, silk, and linen, or from synthetic fibers such as polyester, nylon, and acrylic.
===Ceramics===
'''Ceramics''' are a class of inorganic, non-metallic materials made by the application of heat. They are typically hard, brittle, and resistant to high temperatures and corrosion. Ceramics include materials like clay, porcelain, and advanced ceramics like alumina and zirconia. They are used in applications ranging from traditional pottery and tiles to high-tech industries for components like semiconductors and aerospace parts. Ceramics are valued for their durability, electrical insulation properties, and heat resistance.
===Wood===
'''Wood''' is a natural, organic material sourced from trees and is classified as a biomaterial. It is composed primarily of cellulose, hemicellulose, and lignin, giving it a unique combination of strength and flexibility. Wood is used in a wide variety of applications, from construction and furniture to packaging (e.g., pallets and crates). It is further categorized into hardwood (from deciduous trees like oak) and softwood (from coniferous trees like pine), each with distinct properties suited to different uses. Wood is valued for its renewability, workability, and aesthetic qualities.



[[Category:Taxonomy]]