Low-alloyed Electrodes
ES 8018 B3L A5.5: E 8018-B 3LH4R /
Description
ES 8018 B3L is a basic coated electrode. It gives a CrMo alloyed weld metal that is used in the welding of creep resistant pressure vessels and pipe steels operating under high temperatures. ES 8018-B3L electrodes contain 2.25% Cr and 1% Mo alloy additions with low carbon content. The electrode is designed for welding 2.25% Cr - 1% Mo steels. The rod operates with a very stable arc and minimal spatter. The low carbon analysis of the weld metal contributes to its crack resistance. The addition of Cr and Mo provide for the excellent creep and stress rupture properties of weldments subjected to elevated temperature service. It gives a root pass free of porosity with a minimum amount of spatter. Re-drying is 350°C - 400°C min 2 h.
Typical Chemical Composition (%)
| Si | Mn | Mo | Cr | C |
|---|---|---|---|---|
| 0.40 | 0.70 | 1.10 | 2.30 | 0.04 |
Typical Mechanical Properties
| Yeild Strength | Tensile Strength | Elongation 5x D | Impact (ISO-V) |
|---|---|---|---|
| miN. 480 N / mm² | 630 - 740 N / mm² | % 28 | 20 °C – 70 j Min |
Applications
ES 8018 B3L is used for the welding of steam boilers and steam pipes and pressure vessels that are manufactured from Cr - Mo steels. It can also be used in welding similarly alloyed cementation steels, nitrided steels, heat treatable steels and cast steels. It is an ideal electrode in the multi-pass welding of thick sectioned and rigidly restrained mass structures.
Sizes Available & Recomennded Currents
| Diam. (mm) | Length (mm) | Current (Amperes) | Arc Voltage | Wire Feed |
|---|---|---|---|---|
| 2.50 | 350 | 85 - 95 | ||
| 3.25 | 350 | 90 - 130 | ||
| 4.00 | 450 | 130 - 165 | ||
| 5.00 | 450 | 170 - 220 |
Welding Current
DC {+} AC
Welding Positions
 Flat |
 Horizontal |
 Vertical Up |
 Overhead |
 Fillet |