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UTP A 387 copper alloys
Classifications TIG rod
EN ISO 24373 AWS A5.7 Material-No.
S Cu 7158 (CuNi30Mn1FeTi) ER CuNi 2.0837
Characteristics and field of use
UTP A 387 is used for copper nickel alloys with up to 30 % nickel according to DIN 17664,
such as CuNi20Fe (2.0878), CuNi30Fe (2.0882). Chemical industry, seawater desalination
plants, ship building, offshore technique.
The weld metal of UTP A 387 is resistant to seawater and cavitation.
Typical analysis in %
C Mn Ni Cu Ti Fe
< 0,05 0,8 30,0 balance < 0,5 0,6
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
> 200 > 360 > 30 120 3 1180 – 1240
Welding instruction
V-butt weld with 70° included angle and root gap of 2 mm. Remove oxide skin to approx.
10 mm to the joint groove also on the backside of the weld.
Approvals
TüV (No. 01625), GL
Form of delivery and recommended welding parameters
Rod diameter x length (mm) Current type Shielding gas (EN ISO 14175)
1,2 x 1000* DC (–) I 1
1,6 x 1000 DC (–) I 1
2,0 x 1000 DC (–) I 1
2,4 x 1000 DC (–) I 1
3,2 x 1000 DC (–) I 1
