Cu Nickel Alloy Welding Wire
Henan Gnee New Material Co., Ltd. is one of the most professional manufacturers and suppliers of cu nickel alloy welding wire in China, specialized in providing high quality copper products with competitive price. Welcome to buy discount cu nickel alloy welding wire for sale here from our factory. Customized orders are welcome.
Cu-Ni alloys find many applications in marine, power, electrical and chemical industries. Typical hardware fabricated by welding are condenser and heat exchanger components, seawater piping, distillation apparatus and, demonstrating the excellent antifouling qualities of Alloy UNS C70600, the hull of an ocean going commercial fishing vessel, the Copper Mariner.
| Composition, % maximum unless shown as a range or minimum | ||||||||
|---|---|---|---|---|---|---|---|---|
| UNS Alloy No. | Previous Trade Names | Cu | Ni | Pb | Fe | Zn | Mn | Other Named Elements |
| C70400 | Cu-Ni, 5% | Rem. | 4.8 - 6.2 | .05 | 1.3 - 1.7 | 1.0 | .3 - .8 | |
| C70600 | Cu-Ni, 10% | Rem. | 9.0 - 11.0 | .05 | 1.0 - 1.8 | 1.0 | 1.0 | |
| C71000 | Cu-Ni, 20% | Rem. | 19.0 - 23.0 | .05 | 1.0 | 1.0 | 1.0 | |
| C71500 | Cu-Ni, 30% | Rem. | 29.0 - 33.0 | .05 | .4 - .7 | 1.0 | 1.0 | |
| C72500 | Cu-Ni, Tin | Rem. | 8.5 - 10.5 | .05 | .6 | .5 | .2 | 1.8 - 2.8 Sn |
| ERCuNi(a) (C71580) |
Rem. | 29.0 - 32.0 | .02 | .4 - .75 | (c) | 1.0 | .25 Si .02 P .2 - .5 Ti |
|
| ECuNi(b) (W60715) |
Rem. | 29.0 - 33.0 | .02 | .4 - .75 | (c) | 1.0 - 2.5 | .5 Si .02 P .5 Ti |
|
| (a) ANSI/AWS 5.7-84 (b) ANSI/AWS A5.6-84 (c) Total of lead, zinc, tin and all other elements not named shall not exceed 0.50%. |
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While copper and nickel are soluble in each other, many other elements are not soluble in Cu-Ni alloys and, if present, may cause cracking in the heat affected zone (HAZ) or weld metal. Lead, sulfur, and phosphorus are particularly detrimental and may cause intergranular hot cracking in highly restrained joints. Surfaces must be clean and free of these contaminating elements before heating to high temperatures (such as annealing or welding).
Common sources of the contaminating elements sulfur and phosphorus are markers, paints, temperature indicating markers, cutting fluids, oils, and greases. Oil-based or grease-based contaminants must be removed by solvent cleaning. Acceptable methods include soaking, wiping or spraying with alkaline, emulsion, solvent, or detergent cleaners, or a combination of these methods; by vapor degreasing; by steam (with or without a cleaner); or by high-pressure water jetting.
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