Aluminum bronze (such as QAl9-2, QAl10-3-1.5) is a copper-aluminum alloy system. It obtains high strength, wear resistance and excellent corrosion resistance by adding aluminum (8-10%), manganese, iron and other elements, especially since it has strong resistance to seawater corrosion.
Phosphorus-deoxidized copper rods (TP1, TP2) are copper materials that are deoxidized by adding phosphorus elements, of which TP1 contains 0.004-0.012% phosphorus, and TP2 contains 0.015-0.040% phosphorus. Although the addition of phosphorus slightly reduces the conductivity (85-90% IACS), it significantly improves the welding performance and hydrogen embrittlement resistance of the material, and the corrosion resistance is also better than pure copper. The tensile strength of this type of copper rod is between 220-280MPa, and it has good plastic deformation ability (elongation ≥30%). In industrial applications, phosphorus-deoxidized copper is widely used in pipeline systems (water supply, gas pipeline fittings), refrigeration industry pipelines, and components that require high-frequency welding. Its excellent welding performance makes it outstanding on occasions that require complex connections, while its moderate cost ensures its economical practicality.
Aluminum bronze (such as QAl9-2, QAl10-3-1.5) is a copper-aluminum alloy system. It obtains high strength, wear resistance and excellent corrosion resistance by adding aluminum (8-10%), manganese, iron and other elements, especially since it has strong resistance to seawater corrosion. The mechanical properties of this type of alloy are significantly better than pure copper, with a tensile strength of 550-800MPa and a hardness in the range of HB160-220, but the conductivity is relatively low (12-15% IACS). Aluminum bronze is used in the shipbuilding industry to manufacture key components such as propellers and seawater valves and is used as wear-resistant liners and bearings in mining machinery. It is also an ideal material for corrosion-resistant pump bodies and valves in chemical equipment. Its excellent seawater corrosion resistance makes it one of the preferred materials in the field of marine engineering. Although it is expensive, its long life in harsh environments makes it very economical throughout its life cycle.
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