- E BK-623
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Nickel Alloy Welding Electrode E BK 623 is used for Shield Metal Arc Welding (SMAW). Nickel-based electrode for welding Inconel 600 and similar alloys, cryogenic steels (e.g. 9% and 5% Ni steel), martensitic to austenitic steels, dissimilar steels, heat-resisting steel castings of limited weldability, etc. Good weldability in all positions, including overhead. Special electrode with high nickel content for joining unalloyed and alloyed steel, stainless steel and heat resistant steel, nickel and nickel alloys, and copper and copper alloys. Also suitable for dissimilar welding of these metals. The deposit has very high ductility, is ferrite-free, corrosion resistant, and heat resistant up to high temperatures. Excellent weldability on alternating current.
Joining dissimilar metals, especially for high thicknesses and rigid joints. Welding of cryogenic steels: vessels and pipes for liquefied gases. Intermediate layer in copper-steel joints. Welding of crack sensitive steel types: roller guides of cement kilns, hydraulic cylinder
C | Mn | Fe | Cr | Ni | Nb | Mo | Si |
0.03-0.06% | 2.0-2.5% | 11.0-12.0% | 16-17% | 64% | 2.0-2.8% | 16-17% | 0.4% |
Mechanical Properties (As Welded)
RP0,2
(N/mm2) |
Rm
(N/mm2) |
A
(%) |
Impact Energy +20°C -196°C |
500 MPa (73 ksi) |
780 MPa (113 ksi) |
>35 |
>95 >70 |
Covered Electrode (SMAW)
Ni-Base CrMoNb
300°C/2hours
Use stringer beads (do not weave).
Diameter & Length (mm) |
Current (A) |
2.5x300 |
70~80 |
3.2x300 |
90~120 |
4.0x350 |
120~150 |