UTP A 3444 copper alloys
Classifications TIG rod
EN ISO 24373 AWS A5.7 Material-No.
S Cu 6328 (CuAl9Ni5Fe3Mn2) ER CuNiAl 2.0923
Characteristics and field of use
UTP A 3444 is a copper aluminium multi bronzes with a high Ni and Fe addition. Weld
cladding on cast iron materials and steel. Mixed joints with aluminium bronze steel. It is
resistant to seawater and cavitation resistant.
The weld metal of UTP A 3444 is resistant to seawater and cavitation. Good suitability for
simultaneous stress strain caused by seawater, cavitation and erosion.
Typical analysis of rod and wire in %
Mn Ni Cu Al Fe
1,0 4,5 balance 9,0 3,5
Mechanical properties of the weld metal
Yield
strength
RP0,2
Tensile
strength
Rm
Elongation
A5
Hardness El. conductivity
S · m
mm2
Melting range
MPa MPa % HB °C
400 700 15 200 4 1015 – 1045
Welding instruction
The weld seam area has to be machined to a metallic bright by grinding, sand blasting
or pickling in order to avoid crack formation or the development of pores. To avoid oxyd
formation, UTP Flux 34 Sp needs to be deposited onto the base rods prior to the welding
process.
Approvals
TÜV (No. 01896), GL
Form of delivery and recommended welding parameters
Rod diameter x length (mm) Current type Shielding gas (EN ISO 14175)
2,0 x 1000 DC (–) I 1
2,4 x 1000 DC (–) I 1
3,2 x 1000 DC (–) I 1