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- E BK-NiCu
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Nickle Alloy Welding Electrode E BK NiCu
Nickel Alloy Welding Electrode E BK Ni Cu is used for Sheild Metal Arc Welding. NICU-7 is used for welding NiCu-alloys to themselves and to mild- and low alloy steel. Also suitable for welding NiCu-cladding on mild and low alloy steel. Shipbuilding, seawater evaporation plants, tubes, pump building, offshore, etc. CEWELD E NiCu30Mn is suitable for dissimilar welding between Nickel 200-201, stainless steel, carbon steel, Inconel and Incoloy alloys, Nickel Copper, and Copper-nickel alloys. PROPERTIES This Nickel - Copper weld metal has properties similar to “Monel 400”. It has good strength and resists corrosion in many media, including seawater, salts, and reducing acids. The weld metal is not aged Hardenable
Applications
Inconel 622, 625, alloy 25-6Mo, incoloy 825, disimilar joints of nickel alloys, hastelloy Alloy C276, C22, C4, 2.4611, Typical specifications for the nickel-chromium-molybdenum base metals are ASTM, F574, B619, B622
Classification
AWS
A5.11 : E NiCu-7
EN ISO
14172 : E Ni 4060 (NiCu30Mn3T)
DIN
2.4635
Typical Weld Metal Analysis %
| C | Cu | Fe | Mn | Ni | Si | Ti |
| 0.02% | 4-6% | 1.9% | 3.0% | 66% | 0.5% | 0.4% |
Mechanical Properties (As Welded)
| RP0,2
(N/mm2) |
Rm
(N/mm2) |
A
(%) |
Impact Energy +20°C -196°C |
| 410 MPa (59 ksi) |
640 MPa (93 ksi) |
>40% |
>95 >70 |
General Information
Welding process
Covered Electrode (SMAW)
Alloy Type
Nickle Base E NiCu-7
Re-drying Temperature
300°C/2hours
Beads
Use stringer beads (do not weave).
Cleaning
Remove all cracks and fatigued metal by grinding.
Welding Parameters
| Diameter & Length (mm) |
Current (A) |
| 2.5x300 |
70~80 |
| 3.2x300 |
90~120 |
| 4.0x350 |
120~150 |