DAIKOWM CuAl8Ni2

GMAW
  • COPPER ALLOYS
CuAlNi

Description

Aluminum-Nickel alloyed copper solid wire
This wire rod deposits an aluminum bronze alloy used for welding steel and aluminum bronze (copper-aluminum alloys). It is excellent for cladding components undergoing metal to metal wear and for corrosion resistant surfaces. The addition of nickel improves corrosion resistance in heat and rough seawater. Applications include tube sheets, pickling hooks, impellers, valve seats, chemical plants, pulp mills, etc..
Specifications
DIN 1733
SG-CuAl8Ni2
Shielding
I1, I3
Positions
PA, PB, PC, PD, PE, PF, PG
Current
DC+
Packaging Type
Drums, B300, D200 and D100 spools.

Hardness

150HB
Chem. Comp. %
DEFAULT
Mn
1.35
Ni
1.95
Cr
0.004
Nb
0.003
Al
8.1
V
0.001
P
0.001
Si
0.003
Fe
2.15
Mechanical Properties
min
variant
Tensile strength Rm MPa
-
520
Yield strength Rp0.2 MPa
-
230
Elongation A (L0=5d0) %
-
30
Impact Charpy ISO-V
-
-
Impact Charpy ISO-V
-
-
Welding Parameters
1 mm
1.2 mm
Ampere
130A - 200A
185A - 245A
Voltage
24V - 28V
26V - 30V
Packaging
Ø 0,8÷1,6mm
Ø 0,8÷1,6mm
Packaging Type
Drums, B300, D200 and D100 spools.
Drums, B300, D200 and D100 spools.
Description

Application

This welding material deposits nickel aluminum bronze and is well-suited for welding both wrought and cast parent materials with a similar composition. These alloys are recognized for their high strength and exceptional resistance to stress corrosion, cavitation erosion, corrosion fatigue, and attacks by acids and chlorides. Applications for this welding material encompass corrosion-resistant and spark-resistant pumps, ship propellers, and heat exchangers used in offshore, marine, and mining equipment. When working with aluminum bronze alloys, preheating is not required, and the maximum interpass temperature should be limited to 150°C. However, it's worth noting that the resistance to hot cracking in thick sections with high restraint may be inferior to plain aluminum bronze. An alternative approach is to fill with CuAl, a higher ductility aluminum bronze, and then cap with CuAlNi. This strategy helps enhance overall performance, particularly in challenging welding scenarios.

Alloy Type

Cu-9%Al-5%Ni bronze for welding similar nickel aluminum bronze alloys.

Microstructure

In the as-welded condition consists of a duplex α + β microstructure.

Materials

Joining aluminum bronze. Weld overlay on steels.
EN W.Nr.: 2.0966 (CuAl10Ni5Fe4), 2.0970 (CuAl10Ni3Fe2-C), 2.0978 (CuAl11Ni6Fe5), 2.0980 (CuAl11Fe6Ni6-C).
ASTM: C63200, C63000 (CA630), C95800 (cast), C95500 (cast), C95520 (cast).

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