UTP HydroCav - UTP Schweissmaterial

Standards :
EN 1600 : EZ 35 45 Nb B 6 2
EN ISO 14172 : E Ni Z
(NiCr35 Fe15Nb 0,8)
48
UTP 3545 Nb
Basic coated special stick electrode
with high carbon content for high temperature
cast materials
Application field
UTP 3545 Nb is suitable for joining and surfacing high alloyed 35/45 CrNi high temperature cast materials
of identical or similar nature.
Main applications are reformer tubes in petrochemical installations with a service temperature up to
1175° C.
Welding properties and special properties of the weld metal
UTP 3545 Nb has a smooth and stable arc, good slag removal and a fine-rippled seam structure. The weld
metal is high temperature resistant with very good creep strength.
Mechanical properties of the weld metal
Weld metal analysis in %
C
0,45
Si
1,0
Welding instructions
Clean welding area. Hold stick electrode as vertically as possible, keep a short arc. Use string bead welding
technique with little weaving. The stick electrode is weldable with low amperage settings. Interpass temperature
max. 150° C. Re-dry stick electrodes for 2 – 3 h / 120 – 200° C.
Current type DC (+)
Current adjustment
Stick electrodes
Amperage
Yield strength
R p0,2
MPa
480
Ø mm x L
A
Mn
0,8
2,5 x 300
70 – 90
Tensile strength
R m
MPa
680
Cr
35,0
Ni
45,0
Welding positions
3,2 x 350
90 – 110
4,0 x 350
100 – 140
Nb
0,9
Elongation
A
%
8
Fe
balance
PA PB PC PF
4,0 x 350
100 – 140