AMPCO-TRODE® 7

AWS A5.7 – ERCUAL-A1

Description and Application

AMPCO-TRODE® 7 is an iron-free, aluminum bronze alloy available in spooled wire and 36″ (1000 mm) bare-filler metal rod for use with the gas metal-arc and gas tungsten arc welding processes respectively.

AMPCO-TRODE® 7 deposits are used primarily to overlay bearing and wear-resistant surfaces requiring hardness of approximately 125 BHN and to resist corrosion especially from saltwater, metal salts and many commonly used acids in varying concentrations and temperatures.

This alloy is not recommended for joining since the deposit does have a tendency to be hot short.

$112.50$345.00

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Typical Applications

Tube sheetspickling hooksimpellers
valve seatschemical plantspulp mills

AMPCO-TRODE® 7 Coated

Limiting Chemical Composition
% (filler metal)
Copper*Balance
Aluminum6.0- 8.50
Manganese0.50 max
Silicon0.10 max.
Others0.50 max
* including silver
Mechanical Properties
(Nominal all-weld metal values)
Tensile Strength ksi68 (469 MPa)
Yield Strength ksi28 (193 MPa)
Elongation % in 2″ (51 mm)47
Reduction of Area % BHN (3000kg.)53
1/4″ (6.4 mm) deposit125

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® 7 Technical Data Sheet