• Metal Alloys Corporation

Copper Nickel

Metal Alloys Corporation, ISO 9001: 2000 certified and a 100% export oriented unit, is one of the leading manufacturer of copper and copper alloys cast, extruded and drawn products, viz., billets/ingots, mother shells, tubes/pipes, hollow/solid rods, sections, profiles, etc. 90/10 copper nickel is widely used in sea water. It has very good corrosion resistance to clean or moderately polluted marine or estuary water, even containing dissolved incondensable gases. This alloy is virtually immune from stress-corrosion cracking. In clean seawater, velocities of up 2, 2-2, 5 m/s (7, 5-8, 5 ft/s) are accepted while 4 m/s (13 ft/s) is the upper limit for clean fresh or slightly saline solutions. To avoid the risk of deposit attack, it is generally recommended to never operate at water velocities below about 0, 8-1 m/s (2, 5-3, 5 ft/s). 90/10 copper nickel can also be used, with appropriately reduced flow velocity, in contact with water containing some sulphides or suspended solids. It is also often selected for its good mechanical properties, both at room and relatively elevated temperatures. The company has sophisticated quality control and quality assurance systems along with an ultra modern chemical and physical testing laboratory having computerised spectroscopic analyser for precise alloying, multi-range microscope for micro structure examination, eddy current testing, hydraulic pressure testing, etc.