(PP) Fusibility - Can be described as how easily a material's state can be altered to become a liquid. This is an important property in solder, where its low melting point allows it to melt with the heat of a soldering iron, (PP) Electrical conductivity - Can be described as how easily electrical energy can pass through a material. Gold id an excellent conductor or electricity and although it is an expensive material, it is regularly used in small quantities in high-end electrical components, (PP) Thermal conductivity - Can be describes as how easily heat energy can pass through a material. Aluminium is an efficient conductor of heat, which makes it a popular choice when manufacturing pots and pans, (PP) Resistance to moisture - Can be described as a material's ability to prevent liquid and moisture permeating into its surface. Hydrophobic is another term used for materials such as PVC which are added to materials as coatings which can be added to materials to make waterproof fabrics., (PP) Absorbency - Can be describes as a materials ability to soak up and retain liquid, heat or light. This is an important property in relation to fabrics, (MP) Strength - Can be described as the ability of a material to withstand a constant force without breaking. Strength is usually associated with one of the 5 forces, bending, compression, tension, shear and torsion, (MP) Hardness - Can be described as the ability of a material to withstand scratching, cutting and abrasion. Melamine formaldehyde is regularly used for kitchen work surfaces as it maintains its smooth polished finish due to it hardness, (MP) Density - Can be described as a material's mass per unit volume. Expanded polystyrene is used in packaging for protecting expensive an fragile products, it is chosen due to its low density, (MP) Toughness - Can be described as a material's ability to withstand impact from a dynamic force. Children's toys are subjected to a huge amount of wear and tear and heavy use. HDPE is used in the manufacture odd children's toys due to excellent toughness and being available in a range of colours., (MP) Malleability - Can be described as a material's ability to be permanently deformed or shaped by impact, rolling or pressing without breaking. Low carbon steel is used to produce car body panels due to is malleability allowing it to be pressed into shape., (MP) Ductility - Can be described as a materials ability ro be drawn or pilled in to a long length without breaking. Copper possesses excellent ductility and electrical conductivity so it is used for this., (MP) Elasticity - Is the measurement of a materials ability to stretch under force and then return to its original shape without being deformed once the force is removed. Lycra or elastane has excellent elasticity in is used in high performance sports wear to provide close fitting items to improve performance.,

1.6 Materials and their working properties - Physical and Mechanical Properties

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