FusoFlex

Ultimate-100D2:

ULTIMATE-100 D2 is an electrode specially designed to combine a high level of tensile and impact properties with radiographic quality and 'very low' category of hydrogen content. This favourable combination renders it suitable for welding of high strength low alloy steels, grain refined steels, quenched and tempered steels, having UTS upto 75 kg/mm², and also for joining such high strength steels to C-Mn steels.

Ease of operation in all positions.
Smooth and stable arc which is easy to strike & restrike, combined with low spatter and with due control on molten pool.
Slag detachability with little effort.
Finely rippled bead with regular profile.
Welds of consistent X-ray quality.
Weld metal which possesses excellent mechanical properties and displays resistance to cracking caused by heavy stresses and / or hydrogen. In particular it displays remarkable impact resistance at subzero temperatures down to minus 50°C.
A higher level of metal recovery at 100-110%.
Resistance to moisture pick-up.

Identification:Name Printed

Application :

Penstocks
Pressure vessels
Valves
Tanks
Bridges
Rail Wagons & coaches
Offshore oil well-head process pipe work & fittings.

Chemical analysis of all weld deposits(%):

Carbon	Manganese	Silicon	Molybdenum	Sulphur	Phosphorus	Nickel
0.10	1.65-2.0	0.60	0.25-0.45	0.025	0.025	0.2

All weld mechanical properties:

Ultimate Tensile Strength kg/mm²	Yield Strength kg/mm²	Elongation (L=4d)%	CVN Impact Value Joules at +20°C	CVN Impact Value Joules at -20°C	CVN Impact Value Joules at -40°C	CVN Impact Value Joules at -51°C
70-85	62	20-26	120-180	80-110	60-80	40-60

Welding current ranges and packing data for sizes manufactured:

Dia (mm)	2.5	3.15	4.0	5.0	6.3
Length(mm)	350	450	450	450	450
Current(Amp)(DC+ or AC 70V)	70-100	100-140	140-190	190-250	250-320
Pieces per carton	125	90	60	40	25

Notes on usage:

Ensure that electrodes are dry. It is a safe practice to redry electrodes for one hour at 250-300°C and then to keep them in a holding oven maintained at 80°C-100°C, prior to use.
Keep the arc as short as possible & minimize weaving.
Clean the weld area of any surface contamination.
It is a good practice to preheat the joint faces to about 100°C at the commencement of the working shift, especially in the morning, to expel moisture & any traces of oil/grease.
Preheat and interpass temperature will have to be selected and controlled to suit the grade of HSLA steel which is being welded