KCu-70
For butt or over-lap welding in Cu-Ni alloy (70%Cu-30%Ni, 80%Cu-20%Ni)
For butt or over-lap welding in Cu-Ni alloy (70%Cu-30%Ni, 80%Cu-20%Ni)
| AWS A5.6/A5.6M | ECuNi |
| JIS Z3224 | DCuNi-3 |
| EN – | – |
| GB T3670 | ECuNi-B |
Applicable to the welding of seawater desalination equipment, seawater treatment systems, evaporators, and condensers.
| C | Si | Mn | P | S | Ni | Ti | Pb | Fe | Cu |
| 0.03 | 0.05 | 0.86 | 0.003 | 0.001 | 31.33 | 0.41 | 0.01 | 0.67 | 64.71 |
| Tensile Strength N/mm² | Yield Strength N/mm² | Elongation % | Charpy V-Notch ℃ | Charpy V-Notch J |
| 386 | 268 | 30 | – | – |
| Diameter (mm) | 2.6 | 3.2 | 4.0 | 4.8 |
| F/H-fillet Current(A) | 60-86 | 70-115 | 95-145 | 140-180 |
| V-up/OH Current(A) | 55-85 | 65-110 | 85-135 | – |