Composition and properties of bronze
Bronze has been known to mankind for over 3,000 years as a high-strength alloy based on copper and tin. The metal has increased strength, is not susceptible to corrosion and is easily forged, which is why its scope of application covers most industries. Modern bronze alloys, in addition to the main components, may contain other alloy additions in amounts ranging from 2.5-3% or more. The alloy may contain chemical elements such as lead, chromium, iron and other ingredients that have a beneficial effect on the properties of bronze, and its use has become increasingly popular in recent years.
Properties of bronze
The physical and chemical properties of bronze alloys vary depending on the type of alloy addition.
- Increased strength.
- Low coefficient of friction, which allows it to be used as a contact surface in the production of parts for precision machine tools and tools.
- Corrosion resistance.
- Good weldability – under the influence of heat, the strength and deformation properties practically do not change.
- Increased resistance to exposure to aggressive environments.
- The bronze alloy can have various shades, from white to reddish, depending on the concentration of additives during its production.
Area of application of bronze
The list of places where copper alloys are found is really wide. The production of automotive parts, moving parts and hydraulic fittings is essential without bronze. The alloy is resistant to salt water and chemical solutions. It is used to produce springs, measuring instruments and bushings. The alloy’s sphere of presence is industry, construction, and the production of decorative articles. A large area of application of bronze is the creation of sculptures and monuments. The alloy is popular due to its decorative properties and durability.
- Application in construction
In this area, the alloy is rarely used, despite its corrosion resistance and strength. The reason for this limitation is that bronze is an expensive material. It is more often used for the production of water and sewage fittings. The alloy is also used to produce architectural monuments, sculptures, souvenirs and figurines. There are bronze details of pews, coats of arms, commemorative plaques and other items.
- Industrial use
Bronze is an excellent alloy for the production of various parts subject to abrasion. It is used to produce equipment used in potentially explosive environments. Finished parts can be used in seawater without fear of damage or rust. Bronze is used to produce bushings, bearings, sealing rings and parts of control and measurement devices. The use of bronze in mechanical engineering is explained by its resistance to corrosion. The alloy is used to produce mechanisms operating under pressure.
- Domestic use
The door fittings and upper hinges are made of bronze. There is also demand for sanitary fittings – a variety of shower heads, hoses and handles. The bases of floor lamps, lamps, candlesticks and other household items with a touch of antiquity are made of bronze. The alloy is also used to produce jewelry.
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