E Cu Sn-C
1328g ama 1328g

Aluminum and bronze electrode

AMA 1328G

AWS/ASME SFA - 5.6: E Cu Sn-C
DIN 1733 : EL - Cu Sn 7


Thin-bronze electrode for joining welding and hard facing on copper and copper alloys. Also suitable, for hard facing of copper on steels, cast steel and grey cast iron. Particularly suitable for surfacing welds on bronze bearing in machine-building. Smooth running and good weld ability.

Weld metal analysis in % (typical values):

Cu Sn Mn P
91 7.5 0.4 0.3

Mechanical Properties of all-weld metal:

(single values are typical values)

Tensile Strength
( N/mm )
Vickers hardness
Hv 30
~ 300 – 350 ~ 70 - 100

Welding Parameters
Diameter (mm) Length (mm) Amperage (A)
2 250 40 – 70
2.5 350 70 – 120
3.25 350 130 – 180
4 450 160 – 200


Caution: The lowest possible current must be set when applying the root pass during hard surfacing of ferrous materials, so as to reduce the possibility of impurities in the bronze weld metal through the melting of the base material to a minimum. The current setting should be slightly increased for the subsequent passes. The arc has to be applied in circular fashion in order to ensure slow cooling process of the weld pool, i,e, the arc must repeatedly recover the weld pool. Preheating the work piece can be of advantage. Joint welding is carried put with high currents. The included angle should be 90C if possible. When butt welding ensure adequate air gap. Due to the good heat conductivity of copper and its alloys. The weld zone must be preheated to 100-300C depending on the degree of heat dissipation.
Thin-bronze materials, red brass and copper. Hard facing of copper on steel, cast steel and grey cast

Rebaking :

required at 300°C for 2 hrs.