Lastek 85

Joining dissimilar and difficult to weld steels

High alloyed electrode for joining and surfacing tool steel, spring steel, manganese steel, carbon steel, cast steels and all difficult to weld steels.

The deposit has exceptional tensile strength and resistance to cracking.

Oxidation resistant up to 900 °C (1650 °F).

Even on dirty metal, porous-free welds can be obtained.

Stable arc, almost no spatters.

Smooth welds, without undercut.

Specifications & Usage


Joining of broken tools and dies, cast steel, abrasion resistant steel.

Repair of hydraulic rams, bulldozer buckets and teeth, crushers of manganese steel, gears.

The work hardening characteristics and the high chromium content make Lastek 85 suitable for surfacing on rails and bearing areas, on plastic extrusion tools and cutting edges.


Electrode to be held perpendicular to the work piece; keep a short arc.

Allow each weld bead to cool slightly before making a further deposit. Preheating is necessary when joining high carbon steel ( 150 -250°C).

Allow the welded area to cool down slowly. 12-14% manganese steel to be welded as cold as possible ( max. 350°C)


Welding proces: Covered electrode (SMAW)
Material Type: High alloyed steel
Welding positions: All, except vertical down.
Norm : EN ISO 14700
Classification: E Fe11
Norm: AWS A5.4
Classification: E 312-16
Minimum packing: 5 kg in a plastic box