Lastek 64

Aluminium bronze electrode

Special alloy for joining or surfacing of aluminium bronze.

Very high corrosion, erosion and cavitation resistance in seawater.

Suitable for surfacing carbon steel, alloy steel, cast iron and bronze (metal to metal friction).

Surfacing of ship-propellers in aluminium-bronze (with Ni- and/or Mn).

Porous free deposit.

Specifications & Usage


Blades of centrifugal pumps, pump shafts, pump casings, elbows in pipe lines exposed to cavitation, valves, parts of mixing equipment, ship propellers.

Joining of plates and pipes in ship-construction, chemical, petrochemical and food industry.

Repair of casting flaws in aluminium bronze pieces and art castings.

Hardness: 170 HB / Work hardening up to 250 HB


Clean all parts from oil and grease.

Joining copper alloys to steel: first butter the steel side at lowest amperage; then bridge the gap.

Weld with short arc; use a weaving motion for large surfaces.

Keep electrodes dry.

Copper alloys to be preheated from 100 °C to 300 °C (210 - 570 °F). (Aluminium bronze with less than 12 % Al: limit the preheat temperature to max. 160 °C (320 °F)).

Surfacing on steel: amperage as low as possible; use stringer beads.


Welding proces: Covered electrode (SMAW)
Material Type: Copper (alloys)
Welding positions: PA, PB, PC
Norm : DIN 1733T1
Classification: EL-CuAl9Ni2
Norm: AWS A5.6
Classification: ~E CuNiAl
Minimum packing: 5 kg in a plastic box