90/10 Cupro Nickel is a 90% Copper, 10% Nickel Alloy that also contains small but Important additions of Iron and Manganese to enhance overall Strength Corrosion Resistance. This, combined with High Ductility and Toughness, Makes it a Popular Grade for Marine, Architectural and industrial Applications. 90/10 Alloy offers Designers and Specifiers excellent resistance to Stress Corrosion, Erosion, and Biofouling in Sea Water and Brackish Water, Excellent Fabrication and Welding Properties, a High Resistance to Hydrogen embrittlement and the retention of Mechanical Properties down to Cryogenic Temperatures.
Product Application Areas: Chillers, Heat Exchange & Condensers , Power Plants, Refineries , Desalination Plants, Ship Building & Ship Repairs, Defense Guid To Selection Of Tube Material: Sea Water: Dissolved Salts from 1500 to 3000ppm. Suspended Solid more than 25 ppm. H2S or Ammonia Less than 1 ppm. Permissible average velocity of water 2.5-2.7 meter/sec. Od Size Range: 2 to 219mm Thickness Range: 0.3to 10mm
90/10 Cupro Nickel Tubes:
| Standard | Symbol |
|---|---|
| ASTM B 111 | C 70600 |
| BS 2871 Part 3 | CN 102 |
| EN 12451 | CuNi10 Fe1Mn |
| NFA 51 102 | CuNi10 Fe1Mn |
| JIS H 3300 | C 7060 |
| EEMUA Pub 144 1987 | C 7060X |
| NES 779 Part 3 | 90/10 CuNi |
| IS 1545 | CuNI 10 Fe |
Testing Done On Tubes Maximum Pressure Work P = Maxium work pressure(psi) S = Minimum tensile strength of material for a specific temper(It is the value of the tensile strength in psi in Mechanica properties table) D = Exterior diameter of tube T = Wall thickness of tube P = (2T x S)/5D Non Destructive Tests Eddy Current Testing Hydrostatic Testing Air Underwater Testing Ultrasonic Testing (PMI) Positive Material Identification Destructive Tests Microstructure Test Tensile Test Flattening Test Expansion Test Optical Spectrometry Test Ammonia Vapor Test
