Hardfacing Electrodes

ES 50 ST  / EN 14700: E Fe 2

Description

ES 50 ST is a hardfacing electrode for the repair welding of hot-working tools, hot trimming tools, punches and so on. The weld metal hardness can be increased by hardening and tempering, or by tempering alone. The weld metal can be step hardened. To avoid cracking, the preheat and interpass temperature should be at least 300°C and preferably 500°C.

Typical Chemical Composition (%)

SiMnCrCW
1.101.01.800.328.0

Typical Mechanical Properties

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

Applications

Weld metal hardness, a w Redrying temperature, C 42-50 HRC 200 Hardening temperature, C Redrying time, hours 1100-1150 2 Hardening oil/air Tempering, C/hours Quenching medium 650/0 Soft annealing, C 850

Sizes Available & Recomennded Currents

Diam. (mm) Length (mm) Current (Amperes) Arc Voltage Wire Feed
2.50 350 70 - 110
3.2 350 100 - 150
4.00 350 130 - 190
5.00 350 180 - 250

Welding Current

AC, DC+ OCV 70 V

Welding Positions


Flat

Horizontal

Vertical Up
 
Overhead

Fillet

Hardness (HB)


Special Coating ( performs several functions)


Typical Base Material Grades