Copper Nickel 70/30 Fittings and Flanges
Cu-Ni 70/30 Fittings and Cu-Ni 70/30 Flanges is a mixture of 70% copper and 30% nickel and in the presence of iron and manganese the alloy enhances its general qualities. These elemental additions make it even more resistant to corrosion and erosion and with slightly improved strength level than alloy 90/10, making it suitable for more demanding applications.
Chemical composition
|
GRADE |
Cu |
Ni |
Fe |
Mn |
Pb |
Zn |
|
|---|---|---|---|---|---|---|---|
|
Cu-Ni 70/30 |
Min |
67 |
25 |
0.4 |
– |
– |
– |
|
Max |
30 |
30 |
0.1 |
1 |
0.05 |
1 |
Properties
Alloy 70/30 copper nickel alloy noted for its excellent resistance to corrosion, erosion and pitting combined with a good strength, workability and weldability. Alloy 70/30 Flanges and Fittings are known to oppose hydrogen embrittlement and retain its mechanical properties even at cryogenic temperatures.
Mechanical Properties
|
Grade |
Tensile Strength |
Yield Strength |
Elongation |
|---|---|---|---|
|
[MPA] |
[MPA] |
||
|
Cu-Ni 70/30 |
345 |
135 |
30 |
The expansion of nickel to copper enhances quality and erosion resistance in Copper-Nickel 70/30 Flanges and Fittings while permitting the alloy to stay flexible and hence different components can be added to these Cu-Ni 70/30 Flanges for better improvement of quality, consumption resistance, solidifying, weldability and castability.
Physical properties
|
Grade |
Density (g/cm3) |
Melting Range °C |
Elastic Modulus (GPa) |
Coeff of Thermal Expansion (μm/m/°C) |
Thermal Conductivity (W/m.K) |
Specific Heat ( J/Kg.K) |
Electrical Resistivity (μΩ.cm) |
|---|---|---|---|---|---|---|---|
|
10-300°C |
at 100°C |
0-100°C |
|||||
|
Cu-Ni 70/30 |
8.94 |
1170-1240 |
150 |
16.2 |
29 |
377 |
34 |
Alloy 70/30 Flanges and Fittings are known to oppose hydrogen embrittlement and retain its mechanical properties even at cryogenic temperatures. Cu-Ni 70/30 Flanges are utilized for marine, offshore, shipbuilding, chemical, petrochemical and architectural application.
Specification of Flange
According to application and uses in pipes and tubes Cu-Ni 70/30 Flanges are broadly grouped into different sort, for example, Welding Neck Flange(WNF) & Long Welding Neck Flange(LWNF), Slip-on Flange(SOF), Lap Joint Flange(LJW), Blind Flange, Socket Welding Flange (SWF), Threaded Flange(THW), Plate Flange.
Cu-Ni 70/30 Flanges for the most part has different face type, for example, Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ), blind flange, with various class rating as 50 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16,din 2.4856 , 25, 40 & ANSI B16.5.
Specification of Fittings
Cu-Ni 70/30 Fittings and Cu-Ni 70/30 Flanges are categorically available are Elbow, Reducer, Tee, Coupling, Bend, Stub End, Cap, Nipple, Washer, Cross, Union etc which are available in different types such as Welded, Seamless and Fabricated having thickness range from 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS available with NACE MR 01-75
Application
Cu-Ni 70/30 Fittings and flanges finds its greatest application in areas of hig temperatures and pressures combined with high velocity and destructive turbulence.
- Off-Shore Oil Drilling Companies
- Power Generation
- Petrochemicals
- Gas Processing
- Specialty Chemicals
- Pharmaceuticals
- Pharmaceutical Equipment
- Chemical Equipment
- Sea Water Equipment
- Heat Exchangers
- Condensers
- Pulp and Paper Industry
