UTP HydroCav - UTP Schweissmaterial

Standards :
Material-No. : 2.4638
EN ISO 14172 : E Ni 6022
(NiCr21Mo13W3)
AWS A5.11 : E NiCrMo-10
26
UTP 722 Kb
Basic coated stick electrode for highly
corrosion resistant NiCrMo alloys
(C 22)
Application field
The stick electrode UTP 722 Kb is suited for joining materials of the same nature, e. g. Material-No. 2.4602
NiCr21Mo14W and these materials with low alloyed steels such as for surfacing on low alloyed steels.
For welding components in plants for chemical processes with highly corrosive media.
Special properties of the weld metal
Good corrosion resistance against acetic acid and acetic hydride, hot contaminated sulphuric and phosphoric
acids and other contaminated oxidising mineral acids.
Welding properties
UTP 722 Kb can be welded in all positions except vertical-down. A stable arc and very easy slag removal.
Mechanical properties of the pure weld metal
Yield strength
R p0,2
MPa
> 450
Approximate weld metal analysis in % :
C
< 0,02
Si
< 0,2
Mn
0,8
Cr
21,0
Welding instructions
Opening angle of the prepared seam approx. 70°, root gap approx. 2 mm. Weld stick electrode with slight
tilt and with a short arc. String beads are welded. The interpass temperature of 150° C and a max. weaving
width 2,5 x diameter of the stick electrode core wire should not be exceeded. Re-dry the stick electrodes
2 – 3 hours at 250 – 300° C before use and weld them out of a warm stick electrode carrier.
Current type DC (+)
Availability / Current adjustment
Stick electrodes
Amperage
Tensile strength
R m
MPa
> 720
Ø mm x L
A
Mo
13,5
Welding positions
2,5 x 300
50 – 70
Elongation
A
%
> 30
Ni
balance
W
3,0
3,2 x 250
70 – 110
Impact strength
K v
Joule
> 70
Fe
3,0
PA PB PC PE PF