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 (%)
| Si | Mn | Cr | C | W |
|---|---|---|---|---|
| 1.10 | 1.0 | 1.80 | 0.32 | 8.0 |
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 |