Hardfacing Electrodes

ES 660  / EN 14700: E Zfe 4


ES 660 is a general purpose, rutile coated hard facing electrode especially designed to use with small transformers having a relatively low open circuit voltage. It is resistant to softening up to 500°C. It gives a high abrasion resistant martensitic type weld metal with a medium toughness. Weld metal can not be machined.

Typical Chemical Composition (%)


Typical Mechanical Properties

Yeild Strength Tensile Strength Elongation 5x D Impact (ISO-V)


It is used for hard facing of alloyed and unalloyed steels. Protective lining of worn surfaces of machines used in mines, bulldozer blades, excavator teeth, crushing jaws, conveyors, agricultural and forest machines that are exposed to wear can be hard faced with this electrode.

Sizes Available & Recomennded Currents

Diam. (mm) Length (mm) Current (Amperes) Arc Voltage Wire Feed
2.5 350 60 - 120
3.25 350 100 - 160
4.0 450 160 - 200
5.0 450 170 - 250

Welding Current

AC min. 40 V. / DC { + } ?

Welding Positions


Hardness (HB)

57 - 62 HRC

Special Coating ( performs several functions)

Typical Base Material Grades