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
| Limiting Chemical Composition | |
| Copper* | Balance |
| Aluminum | 6.0- 8.50 |
| Manganese | 0.50 max |
| Silicon | 0.10 max. |
| Others | 0.50 max |
| Mechanical Properties | |
| Tensile Strength ksi | 68 (469 MPa) |
| Yield Strength ksi | 28 (193 MPa) |
| Elongation % in 2″ (51 mm) | 47 |
| Reduction of Area % BHN (3000kg.) | 53 |
| 1/4″ (6.4 mm) deposit | 125 |
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