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AMPCO-TRODE® 521

AWS A5.7 – ERCUNI (70/30)

Base materials

Particularly suitable for high stressed corrosion resistant weld surfacing on cast iron and on unalloyed and low- alloyed steel as well as seawater resistant CuZn alloys. Suitable for welding on CuNi.

Shielding gas

Argon, Helium or Argon/Helium-mixtures

$206.00$216.00



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Typical Applications

Tube sheets Pickling hooks Impellers valve seats
Chemical plants Pulp mills

AMPCO-TRODE® 521

Typical composition in %
Ni 29.0 – 32.0
Fe 0.4 – 1.0
C < 0.05
Mn 0.5 – 1.5
Si < 0.2
Ti 0.2 – 0.5
S < 0.015
P < 0.02
Pb < 0.02
Others total < 0.5
Physical properties (Approx. values)
Electrical conductivity [S*m/mm²] 2
Therm. conductivity [W/m K] 30
Density [kg/dm³] 8.9
Melting temperature [° C] 1.210
Tensile strength Rm [MPa] 400
Elongation A5 (Lo=5d0) [%] 35

Specifications

AWS A5.7 Class ER CuAl-A1 ASME SFA 5.7 Class ER CuAl-A1
*Hardness will vary depending on quality of the weld and experience and knowhow of the welder.

Document Download

AMPCO-TRODE® 521 Technical Data Sheet