Hardfacing Electrodes

ES 200 KA A5.13: E FeMn-A / EN 14700: EZ Fe 9

Description

ES 200 KA is a high-recovery, austenitic-manganese steel electrode containing nickel. It produces a crack-resistant weld metal, which work-hardens under compressive stresses. It is intended for surfacing and building up Mn-steel components exposed to severe impact and moderate abrasion. Typical applications include crusher plates and rolls, bulldozer teeth, cones and mantels of rotary crushers, dredger buckets, rail crossings and so on. The interpass temperature should be kept as low as possible. It has about % 165 metal recovery. Re-drying is 300°C min. 2 h.

Typical Chemical Composition (%)

SiMnCNi
0.1014.000.703.50

Typical Mechanical Properties

Yeild Strength Tensile Strength Elongation 5x D Impact (ISO-V)
440 N / mm² 690 N / mm² % 30 -20 °C 80 j -60 °C 45 j

Applications

It is used for the surfacing and reclamation of austenitic %12 - 14 Mn steels and joining of these to mild or medium carbon steels. Teeth used for mineral handling, cone, roll and law crushers, crushing and grinding hammers, screens and grid bars and parts exposing to impact can be hard surfaced . Especially on % 12-14 Mn steels, it is important to use this electrode before using chromium carbide structured hard facing electrodes to form a buffer layer as it enables a healthy joining of the subsequent hard face to the base metal.

Sizes Available & Recomennded Currents

Diam. (mm) Length (mm) Current (Amperes) Arc Voltage Wire Feed
2.50 350 70 - 100
3.25 350 100 - 150
4.0 450 150 - 200
5.0 450 210 - 260

Welding Current

Welding Positions


Flat

Horizontal
*    
Fillet

Hardness (HB)

160 200 HB ( as welded ) - 450 HB ( after cold working )


Special Coating ( performs several functions)


Typical Base Material Grades