ESt

AWS/ASME SFA - 5.15	~ESt
EN ISO 1071	E C Z Fe-1
TS EN ISO 1071	E C Z Fe-1

ESt acts as a first-pass layer on cast irons with low weldability (such as grey cast iron and old castings), forming a bonding interface between the base metal and subsequent filler layers. It is also used to remove or reduce surface contaminants that may be present on aged or degraded castings. It provides an ideal underlay for second-pass welding with pure nickel or nickel-iron electrodes. Additionally, it is suitable for single-pass wear-resistant surface build-ups. ESt stands out with its excellent weldability and can be easily applied using the stringer bead technique. It ensures high deposition efficiency while operating with low penetration, minimizing the impact on the base material during welding.

DIN

GGG 40.3 - GGG 70

GTS 35-10 - GTS 70-02

GTW 35-04 - GTW S 38-12