BRONZE CASTING
Bronze is an alloy of copper and tin in various proportions, with a minimum of 75% copper, but can not exceed certain limits because it becomes fragile. Tin copper transmitted resistance and hardness. 6% can not work in cold, reaching 17% maximum tensile strength.
Characteristics
- Laminates bronzes contains up un10% tin, increasing resistance processing, soft bronze resisting to 40 Kg / cm2 tensile strength, an elongation of 50% in the form of tape and wires of diameter 0.5 to 5mm. The hard bronze reaches 70-90 Kg / cm2 and an elongation of 2%.
- Aluminum bronzes: contain up to 10% aluminum reaching great resistance.
- Cast bronzes contain in addition to copper and tin, other metals such as lead, zinc, magnesium, aluminum in small doses.
- Phosphorous bronzes are copper alloy and tin deoxidized with phosphorus, coming to contain up to 30% tin.
- Red bronzes (azófares) contain copper, zinc, tin or lead not from 10% to 75%.
Applications
Applications include mechanical parts resistant to abrasion and corrosion, fittings, manufacture of springs, bearings and valves, elements of the shipbuilding industry, engines, machinery and ornamentation, as well as good quality musical instruments like bells, gongs, saxophones, and Also use it to make rope of pianos, harps and guitars.
