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Suppliers of Cuni Welding Rods in India, Cuni Welding Rod suppliers, Cuni Welding Rod specifications, Cuni Welding Rod applications, Cuni Welding Rod properties, Cuni Welding Rod dealers, Cuni Welding Rod exporters
DETAILED INFORMATION
ERCuNi (NA67) is used for gas metal and gas tungsten arc welding. Can also be used by oxy-fuel welding of 70/30, 80/20, and 90/10 copper nickel alloys. A barrier layer of nickel alloy 610 is recommended prior to overlaying steel with GMAW weld process.
Copper-nickel alloy solid wire 70/30. Assembled to match Cu-Ni 70/30 alloys. The nominal composition of this product is 67% copper and 30% nickel. A buttering layer is required (normally alloy 400 or pure nickel is used for buttering). Applications include offshore construction, desalination plants, evaporators, condensers, etc, in salt and sea water processing systems.
Copper-nickel alloys are stronger and more corrosion-resistant than copper alone, but due to copper’s softness, are less strong than steel. They have excellent ductility (ability to transfer electricity), toughness, and malleability. Cryogenic (extremely frozen) temperatures do not make copper-nickel alloys brittle. Table 3 compares their mechanical abilities at room temperature; when the temperature drops below freezing, the abilities will change slightly.
Chemical Composition Of Cuni 70-30
|
Fe |
C |
Mn |
Ni |
P |
S |
Co |
Pb |
Zn |
Sn |
Cu |
|
0.4 – 1 |
max 0.05 |
0.5 – 1.5 |
30 – 32 |
max 0.02 |
max 0.05 |
max 0.1 |
max 0.02 |
max 0.5 |
max 0.05 |
Bal |
Equivalent Grades & Steel Number Of Copper Nickel Alloy 70/30
Trade Names: ERCuNi, CuNi 70-30
CN107, C71500, C71520, CW354H, DEF STAN 02-879 Annex B, DEF STAN 02-780, NES780, BS2874, EN 12164, ASTM B151, DGS320, DIN 2.0882, EU EN CuNi30Mn1Fe
Checklist For Copper-Nickel Welding
Welding copper-nickel requires conformity to standards and high cleanliness at all times. For all welding processes, here is a basic checklist.
- Source your base materials (copper-nickel alloys) only from reputable suppliers.
- Ensure that your coordination and plant site maintain the highest levels of cleanliness to ensure a clean production process and supply chain.
- For all welds, including 90-10 and 70-30 copper nickel, 70-30 copper-nickel consumables are recommended
- Use 65% nickel-copper consumables when welding steel to copper-nickel.
- Make sure you do not exceed maximum stress limits for the alloys.
- Avoid sharp-angled bends in pipe systems as stress concentrators
- During welding, do not use polluted or contaminated water.
- If an extra safeguard is required, add ferrous sulfate.
- If high biofouling resistance is required, electrically insulate copper-nickel alloys from less noble alloys.
Features Of Cu-Ni Welding Rod
- Exceptional resistance to many corrosives
- Superior mechanical properties
- No partitioning and cut pieces in wires length
- Extended wear life and great strength
- High durability ensures long life of the wire
- Perfect finish with no flawlessness
- Resistant against acid and heat
- A copper nickel wire suitable for joining highly stressed corrosion-resistant material and for surfacing unalloyed and low alloyed streel.
- Used for surfacing and joining cast iron.
Applications Of Cu-Ni Welding Rod
- Welding backing rings,
- flexible metal hose,
- weld wire and boiler parts
- Shipbuilding,
- Pipelines,
- Chemical industry,
- Structural/gerneral fabrication.
Types Of Cu-Ni Welding Rod
Copper Nickel Filler Rod
90/10 Copper Nickel Welding Rod
Copper Nickel Tig Rod
Copper Nickel Brazing Rods
All this cuni welding rod are manufactured as per the client requirement.
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