Lastek 41 E

Joining cast iron and cast iron to steel alloys

Ferronickel cored electrode for welding grey, nodular and alloyed cast iron. Due to the low heat input, the high tensile strength and ductility, successful welds can be made on heavy or highly stressed sections.

Lastek 41E can be used for joining virtually all types of cast iron and for joining cast iron to different types of steel alloys. The special formula allows to weld with a high current without the coating turning red. The possibility to use straight polarity without danger of cracking guarantees full penetration and very strong welds.

Thanks to the pulsating arc, Lastek 41E can be used in all positions (vertical down and up, overhead).

Fully machinable, solid and dense deposit.

Specifications & Usage


Repairing heavy sections of grey and alloyed cast irons, SG iron, meehanite.

Machine bases, motor blocks, gear cases, cast iron dies, pumps.

Repairing casting defects with good colour match.

Hardness: 150-180 HB


When assembling cast iron and steel, weld 2/3 on the cast iron and 1/3 on the steel.

The pulsating arc of Lastek 41E alternately creates a phase without deposit (where the developed heat burns the oil or other impurities on the cast iron) and a phase where a droplet is deposited on the cast iron.

The first phase is performed during the forward movement and the second phase during the backward movement.

Peen the deposit after every pass to reduce stress build-up.


Welding proces: Covered electrode (SMAW)
Material Type: Cast iron
Welding positions: All
Norm : EN ISO 1071
Classification: E C Ni-Fe 1 1
Norm: AWS A5.15
Classification: E NiFe-CI
Minimum packing: 5 kg in a plastic box