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
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
