FusoFlex

Silvershine-4466:

has been designed specially for welding of duplex stainless steels of similar composition and containing copper.
Lime-titania covering to derive the advantage of pleasing operating characteristics on DC(+) as well as AC (70V).
Controlled weld chemistry for achieving the desired level of ferrite
high resistance to general corrosion, pitting & stress corrosion
high yield strength (> 600 MPa)

Identification:Name Printed

Application:Pumps, valves, process equipment in offshore oil & gas industries, pulp & paper, textile industries, chemical and petrochemical plants

Chemical analysis of all weld deposits(%):

Carbon	Manganese	Silicon	Sulphur	Phosphorus	Chromium	Nickel	Molybdenum	Copper	Nitrogen
0.06	0.50-1.50	0.90	0.025	0.035	24.0-27.0	7.0-8.0	2.8-4.0	1.5-2.5	0.10-0.25

All weld mechanical properties:

Ultimate Tensile Strength kg/mm²	Elongation (L=4d)%	CVN Impact Value Joules at 20°C	Hardness
76	15	30-50	300HV

Welding current ranges and packing data for sizes manufactured:

Dia (mm)	2.5	3.15	4.0	5.0
Length(mm)	350	350	350	350
Current(Amp)(AC or DC 70V)	60-80	75-110	100-140	140-200

Notes on usage:

Ensure that electrodes are dry enough. In case of moisture pick-up, redry the electrodes at 200-250°C for 2 hrs. Thereafter, either allow the oven to cool slowly to about 60°C, or transfer the electrodes to a holding oven maintained at 50°-60°C. Avoid overdrying i.e.temperature more than 300°C and not more than two cycles of two hours at 200-250°C.
Use welding currents within the prescribed range, & as low as possible, consistent with plate thickness & proper fusion:
Keep the arc as short as possible;
Avoid heat build-up by minimizing weaving of electrode;
Control preheat & interpass temperature in the range 100°C -200°C
Clean the joint faces of all contamination.
Use stainless steel wire brush for cleaning the weld beads;
Rapid cooling recommended if impact property has to be improved
Prevent excessive ferrite formation (>65%) in case of a risk of cold cracking due to high restraint (control) preheat and interpass in the range of 100-200°C