DESCRIPTION
N-Ni Mo-3 is a nickel-molybdenum flux-coated electrode designed specifically for welding Hastelloy® W to itself or to a variety of other alloys used in high temperature service applications. VOLTAWELD N-NiMo-3 is excellent for joining dissimilar combinations of cobalt, nickel and iron-base alloys.
APPLICATIONS
N-NiMo-3 is most commonly used for jet engine repair and maintenance, gas turbine parts and rotor hubs. This electrode will provide good mechanical properties up to 1800ºF, however it does exhibit poor oxidation resistance 1400ºF and it should not be used for service applications in excess of 750 hours.
NSTRUCTION FOR WELDING
(1) Its weldability is as same as austenitic stainless steels.
(2) Keep the interlayer temperature under 100ºC and cool it as fast as possible.
(3) Keep the welding current as low as possible.
(4) Dry the electrodes at 150 ~ 200ºC for 30 ~ 60 minutes before use.
TYPICAL ANALYSIS OF ALL WELD DEPOSIT:
C |
Si |
Mn |
Fe |
Ni |
Mo |
Cr |
W + Co |
|
0.09 |
0.8 |
0.8 |
5.5 |
Bal |
25.7 |
4.3 |
2.7 |
|
TYPICAL ALL WELD MECHANICAL PROPERTIES:
Yield Point
N/mm2 (Ksi) |
Tensile Strength
N/mm2 (Ksi) |
Elongation
% |
HARDNESS |
NA |
689 (100) |
26.5 |
95 HRB |
RECCOMMENDED CURRENTS: Ampere (AC/DC+)
Size |
Dia |
3.2 |
4.0 |
5.0 |
(mm) |
Length |
350 |
350 |
350 |
Current
Range |
Flat |
70-110 |
100-150 |
130-180 |
Vertical & OH |
65-105 |
95-140 |
- |
WELDING POSITIONS:
FLAT, FILLET, VERTICAL UP, HORIZONTAL, OVERHEAD
Packing: in 5Kg plastic container, then 4 5kg containers in master carton box
Other special requests for packing such as plastic container ands vacuum packed plastics and even sealed steel cans can be accommodated. |
