لخّصلي

A mechanical engineer uses different materials to build machinery or tools.A specific knowledge of materials is required, concerning qualities, properties, costs and general characteristics

When a machine or a tool is made, the most suitable materialmust be chosen by considering its properties, which can be classified as mechanical, thermal, electirical and chemical.Composye materials are made up of tto or more materials cobined to improve their mechanical properties.concrete is reinforced with steel and is used in building engineeringThe main types of materials used in mechanical engineering are metals, ceramics and composite materials.Bronze (formed by mixing cooper and tin) and other alliminium alloys which are used in the aircraft industry.PVC or polyvinyl chloride is a type of plastic used to insulate wires and cables.

A mechanical engineer uses different materials to build machinery or tools. A specific knowledge of materials is required, concerning qualities, properties, costs and general characteristics

When a machine or a tool is made, the most suitable materialmust be chosen by considering its properties, which can be classified as mechanical, thermal, electirical and chemical. The main types of materials used in mechanical engineering are metals, ceramics and composite materials. The most commonly used materials are metals, which can be divided into ferous and non-ferous. They can be used in their pure form or mixed with other elements. In this second case we have an alloy and it is used to improve some properties of the metals. The most commonly used ferrous metals are iron and alloys which use iron. Because iron is soft and pasty, it is not suitable to be used as a structural material. So, a small amount of carbon is added to it to make steel alloy.

Non-ferrous metals used contain little or no iron. The most common non-ferrous metals used in mechanics are cooper, zinc, tin and alliminium. Some common non-ferrous alloys are brass formed by mixing (cooper and zinc). Bronze (formed by mixing cooper and tin) and other alliminium alloys which are used in the aircraft industry. Other examples of materials used in mechanical engineering are plastic and rubber.

PVC or polyvinyl chloride is a type of plastic used to insulate wires and cables. Rubber is a polymer

and its best property is elastucity, as it returns to its original size and shape after deformation. Ceramic materials are good insulators; hard resistant, and strong, but brittle.

Composye materials are made up of tto or more materials cobined to improve their mechanical properties.concrete is reinforced with steel and is used in building engineering