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AMI DEEP ALLOYS INDIA

Bronze

Bronze

Bronze is a Copper-Tin alloy. The casting alloy has tin content between 9-12%. Increasing Tin content decreases conductivity but increases the hardness. Bronze also form protecting layer on the surface of Copper oxide and Copper carbonate which protects underlying alloy from further corrosion. This makes bronze resistant to corrosion, wear, and seawater and offers good fatigue strength and excellent material for spring and sliding components. Bronze alloys with about 0.4 – 1 % Phosphorous are harder and usually called Phosphorous Bronze.



Details

Alloy Composition Applications
CuSn6 Sn 5,5 . 7,0 P 0,01 - 0,04 Cu Rest Good corrosion resistance and strength properties. Wear resistant, good solderability. Good cold formability. Springs of all kinds, especially for the electrical industry. Used in the paper, pulp and chemical industries, in shipbuilding and mechanical engineering.
CuSn8 Sn 5,5 . 7,0 P 0,01 - 0,04 Cu Rest Good corrosion resistance and strength properties. Wear resistant, good solderability. Good cold formability. Springs of all kinds, especially for the electrical industry. Used in the paper, pulp and chemical industries, in shipbuilding and mechanical engineering.
CuSn8 Sn 7,5 - 8,5 P 0,01 - 0,04 Cu Rest Better corrosion resistance than with lower tin content tin bronze, higher strength and very good sliding properties and wear resistance. Good cold formability, good solderability. Sliding elements, (thin-walled)plain bearings (Bushings) and sliding guides. Highly stressed worm and gear wheels, bolts and screws.
CuSn8P Sn 7,5 - 8,5 P 0,2 - 0,4 Cu Rest Like Cu n8. The increased phosphorus content is intended to improve the wear resistance and sliding properties.
CuSn11P-C Sn 10,0 - 11,5 P 0,5 - 1,0 Cu Rest Higher corrosion/errosion resistance than Gunmetals. Applications in Gears, general bearings.
CuSn11 Sn 10,0 - 12,0 P ⩽ 1,5 Cu Rest Corrosion resistance. Good mechanical properties for gears, worm gears, heavy-duty bearings, reduction gears, worm gears.
CuSn10-C Sn 9,0 - 11,0 Pb ⩽ 1,0 Cu 88,0 - 90,0 Construction material with high elongation, resistant to corrosion and sea water. Pump housings, pumps and water turbines Fittings such as guide vanes, impellers and blades.
CuSn12-C PB-2 BS1400 Sn 10,5 - 13,0 Pb ⩽ 0,5 Cu 85,0 - 89,0 Tough, hard material with good wear resistance, also suitable for high sliding speeds. Good corrosion- and seawater resistance. Resistant to cavitation stress. Highly stressed worm gears, cylinder inserts, adjusting and sliding strips.
CuSn11Pb2-C Sn 10,5 - 12,5 Pb 1,0 - 2,5 Cu Rest High corrosion resistance. Good machinability. For gears and general bearings.

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