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" tubes 90/10 Copper Nickel tube EN 12451 CuNi 10 Fe 1Mn ":- 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 and hot spot denickelification. In clean sea water, 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 avoided 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 Cupro 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.
Copper Nickle
"90/10 Copper Nickel Tube":-
ASTM B 111 C 70600/ASME SB 111 C 70600/BS 2871 part 3 CN 102/EN 12451 CuNi10 Fe 1 Mn/NFA51 102 CuNi10 Fe1Mn/JIS H 3300 C 7060/
We are reckoned amongst the trusted manufacturers and exporters of a wide range of 90/10 Copper Nickel Tubes. Known for their flexibility, high corrosion resistance, superior tensile strength, trouble free installation and maintenance, these are in demand in different industries. To ensure complete client satisfaction, the entire array of 90/10 Copper Nickel Tubes is examined thoroughly on standard quality parameters before final delivery.
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Technical Specifications 90/10 Copper Nickel Seamless tube
BS 2871 PART III/72 CN 102 & 07 EQUIVALENT SPEC. ASTMB C70600 & 71500
Chemical Requirements C70600 C71500
Copper Remainder Remainder
Iron 1.0 to 2.0% 0.4 to 1.0%
Nickel 10 to 11% 30 to 32%
Manganese 0.5 to 1.0% 0.5 to 1.5%
Total Imp. 0.30% max. 0.30% max.
Physical Properties
Condition T.S. Kg/mm2 EL% Min T.S. Kg/mm2 EL% Min
Annealed (O) 35 35% 37.5-46 30%
As manufactured (M) 44 min - 51 min -
Further Tests
Drift Test
Hydraulic Test
Microstructure
Eddy Current Optional
Uses Gr I : Excellent corrosion resistant to turbulently used in condensers for coastal power plants, petroleum refineries and chemical plants. Gr II : High impingement corrosion resistant to brackish sea water at velocities upto 3 to 4 m/sec used in desalination plants and other sea water condenser application
