Hardfacing Electrodes
ES 68 / EN 14700: E Fe 5 B
Description
ES 68 It is a basic coated electrode. Molibdenum high - speed steel type designed for building up on items that are subject to EN 14700 severe abrasion and more than average impact; Preheating temperature 200°C - 300°C. Resistant to service temperatures of up to 500°C. Metal recovery % 135. Re-drying is 300°C min. 2 h.
Typical Chemical Composition (%)
| Si | Mn | Mo | Cr | C | V | W |
|---|---|---|---|---|---|---|
| 1.0 | 1.0 | 7.0 | 4.0 | 0.70 | 1.7 | 2.0 |
Typical Mechanical Properties
| Yeild Strength | Tensile Strength | Elongation 5x D | Impact (ISO-V) |
|---|---|---|---|
Applications
It is designed for shear blades, extrusion rams, tampers, ripper, teeth and coal planes. It is used for the repair ana production of cutting tools, particularly for building - up cutting edges and working surfaces. The deposit is highly resistant to friction corrosion and impact. The production of new tools by using non-alloy and low-alloy base metals is also possible. The weld metal deposit is equivalent to a high speed steel with increased Mo-content.
Sizes Available & Recomennded Currents
| Diam. (mm) | Length (mm) | Current (Amperes) | Arc Voltage | Wire Feed |
|---|---|---|---|---|
| 2.50 | 350 | 50 - 80 | ||
| 3.2 | 350 | 80 - 110 | ||
| 4.0 | 350 | 110 - 140 | ||
| 5.0 | 350 | 140 - 170 |
Welding Current
Welding Positions
 Flat |
 Horizontal |
* |
Hardness (HB)
56 - 60 HRC (as welded )