90/10 Cupro Nickel Tubes
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
| Materials | Grades | Product Symbol | Cu | Su | Zn | Pb | Ni | Fe | As | P | Min | AI |
| 90/10 Cupro Nickel Tubes | ASTM B -111 | C 70600 | Remainder | - | 1.0 | 0.05 | 9-11 | 1.0-1.8 | I | - | 1.0 | - |