FusoFlex

Cryomate-2:

Standardised with coating of special basic flux system

Non-synthetic Ni-Cr-Mo-Nb electrode for welding of NiCrMo alloys and superaustenitic stainless steels.
Welds of radiographic quality.
Pleasing behaviour in terms of smooth arc, low spatter and easy de-slagging.

Identification:Name Printed

Application:

Cryogenic vessels & pipework of 9% Ni steel (Q & T grade) for temperatures down to minus 196°C.
Elevated temperature services in furnace equipment & petrochemical plants & power generation plants, involving temperatures above 900°C.
Joining & surfacing in fabrication.
Repair & maintenance welding, especially in reclamation of dies.
Base materials: Inconel 625, Inconel 601, Incoloy 800H, 825, & similar.
Weld metal is characterized by stable properties over a wide range of temperatures from minus 269°C to above 1000°C.
Presence of high levels of Cr, Mo & Nb confer resistance to general corrosion, as also to pitting, crevice, & stress corrosion, cracking in chloride media.
Higher tensile strength, as compared to other standard Nickel-base alloys.
Tolerance to dilution in many combinations of nickel-base alloys and steels.

Carbon	Manganese	Silicon	Chromium	Nickel	Molybdenum	Niobium+Tantalum	Copper	Iron	Cobalt	Sulphur	Phosphorus	Others
0.10	1.0	0.75	20.0-23.00	55.0	8.0-10.0	3.15-4.15	0.050	1.0	0.12	0.020	0.030	0.50

Ultimate Tensile Strength kg/mm²	Elongation (L=4d)%	CVN Impact value (Joules) at -196°C	Lateral expansion at -196°C
76	30	30	0.4

Thorough cleaning of joint faces in essential to prevent pores & cracks.
Redry electrodes at 200°-250°C for 1-2 hours & transfer them to a holding oven maintained at 70°-80°C.
Use short arc to the extent possible.
Stringer beads are to be preferred but weaving, when necessary, be restricted to maximum 2½ times the core wire diameter.
In order to avoid crater crack, fill up crater properly & draw the arc away to the side.
Use minimum currents consistent with proper fusion, so as to control dilution, especially in buttering of alloy steels.
Preheating & interpass temperatures and PWHT is determined by the class of base materials.