Bronze is a combination of copper and what other metal?

Answer 1

Bronze refers to a broad range of copper alloys, usually with tin as the main additive, but sometimes with other elements such as phosphorus, manganese, aluminium, or silicon. (See table below.) It is strong and tough and has myriad uses in industry. It was particularly significant in antiquity, giving its name to the Bronze Age.

Classification of copper and its alloys
Classification of Copper and Its Alloys - Wrought / Extruded[1] Family Principal alloying element UNS numbers
Copper alloys, Brass Zinc (zn) C1xxxx–C4xxxx,C66400–C69800
Phosphor bronzes Tin (Sn) C5xxxx
Aluminium bronzes Aluminium (Al) C60600–C64200
Silicon bronzes Silicon (Si) C64700–C66100
Copper nickel, Nickel silvers Nickel (Ni) C7xxxx

Answer 2

Tin + Copper = Bronze

Answer 3

Bronze=Copper+Tin
Brass=Copper+Zinc.

Answer 4

Rust consists of iron oxides. Non-ferrous metals cannot rust though they can still form oxides. Copper forms verdigris, a green oxide of copper. Bronze is an alloy of copper and tin and forms a patina as it tarnishes but it cannot rust. Metals can rust if they contain iron. Steels are alloys of iron and carbon and sometimes other metals and so they can rust, but non-rusting steels can be made, called stainless steel. Some stainless steels are of lower quality than others and will eventually rust, but slowly. Some ferrous metals (alloys containing iron) can rust faster than some steels . It depends on their composition, and so the question as stated has no definite answer. All that be be said is that some steels and metals rust and that copper and bronze don't.

Answer 5

With the exception of steel, bronze is superior to iron in nearly every application. Although bronze develops a patina, it does not oxidize beyond the surface. It is considerably less brittle than iron and has a lower casting temperature.

Copper-based alloys have lower melting points than steel and are more readily produced from their constituent metals. They are generally about 10 percent heavier than steel, although alloys using aluminium or silicon may be slightly less dense. Bronzes are softer and weaker than steel, Bronze springs are less stiff (and so store less energy) for the same bulk. It resists corrosion (especially seawater corrosion) and metal fatigue better than steel and also conducts heat and electricity better than most steels. The cost of copper-base alloys is generally higher than that of steels but lower than that of nickel-base alloys.

Copper and its alloys have a huge variety of uses that reflect their versatile physical, mechanical, and chemical properties. Some common examples are the high electrical conductivity of pure copper, the excellent deep-drawing qualities of cartridge case brass, the low-friction properties of bearing bronze, the resonant qualities of bell bronze, and the resistance to corrosion by sea water of several bronze alloys.

In the twentieth century, silicon was introduced as the primary alloying element, creating an alloy with wide application in industry and the major form used in contemporary statuary. Aluminium is also used for the structural metal Aluminium bronze.

Bronze is the most popular metal for top-quality bells and cymbals, and more recently, saxophones. It is also widely used for cast metal sculpture (see bronze sculpture). Common bronze alloys often have the unusual and very desirable property of expanding slightly just before they set, thus filling in the finest details of a mould.

Bronze also has very little metal-on-metal friction, which made it invaluable for the building of cannons where iron cannonballs would otherwise stick in the barrel. It is still widely used today for springs, bearings, bushings, automobile transmission throw-out bearings, and similar fittings, and is particularly common in the bearings of small electric motors. Phosphor bronze is particularly suited to precision-grade bearings and springs.

Bronze is typically 60% copper and 40% tin. Alpha bronze consists of the alpha solid solution of tin in copper. Alpha bronze alloys of 4-5% tin are used to make coins, springs, turbines and blades.

Commercial bronze (otherwise known as brass) is 90% copper and 10% zinc, and contains no tin. It is stronger than copper and it has equivalent ductility. It is used for screws and wires.

Another useful property of bronze is that it is non-sparking. That is, when struck against a hard surface, unlike steel, it will not generate sparks. This is used to advantage to make hammers, mallets, wrenches and other durable tools to be used in explosive atmospheres or in the presence of flammable vapours.

Answer 6

Brass

Answer 7

Iron

Answer 8

Tin.