IDENTIFICATION
Griduct 128M, E 12018M
CLASSIFICATION
AWS/SFA 5.5: E12018M
DESCRIPTION
Basic coated Hydrogen controlled Low-alloy, High Tensile Electrode. The deposition efficiency is approx. 110%. Deposited welds are of radiographic quality.
WELD METAL ANALYSIS (RANGE) %
| C | Mn | Si | S | P | Ni | Cr | Mo | V |
| 0.09 max | 1.3 - 2.25 | 0.6 max | 0.020 max | 0.020 max | 1.75 - 2.50 | 0.30 - 1.50 | 0.30 - 0.55 | 0.05 max |
MECHANICAL PROPERTIES (RANGE)
| TS (MPa) | YS (MPa) | EL (%) (L=4D) | CVN Impact Value | |
| Temp | Joules | |||
| 830 - 980 | 745 - 830 | 18 min | 27°C | 150 |
| -51°C | 27 - 80 | |||
TYPICAL APPLICATIONS
• Penstock, earth moving equipments.
• Heat treated fine grained steels.
• For welding USS -T1 steel, WEL -TEN 80 steels, HY 100 equivalents. Specially recommended for welding ASTM AS17Gr F Q&T steel.
WELDING PROCEDURE : Use short arc length. The electrodes should be used in perfectly dry condition. The electrodes should be dried at 400°C for 1 to 2 hours to obtain better result.
DIFFUSIBLE HYDROGEN CONTENT IN THE WELD METAL : Max. 4.0 ml / 100 g max of deposited weld metal.
WELDING POSITION :
PACKING PARAMETERS
| Size (mm) | Length (mm) | Amps | Packing / Box (kg) | Packing / Box (Pcs) |
| AC (90V) / DC (+) | ||||
| 2.5 | 350 | 60 - 85 | 5 x 4 = 20 | 160 x 4 = 640 |
| 3.15 / 3.20 | 450 | 90 - 130 | 5 x 4 = 20 | 110 x 4 = 440 |
| 4 | 450 | 140 - 190 | 5 x 4 = 20 | 70 x 4 = 280 |
| 5 | 450 | 190 - 250 | 5 x 4 = 20 | 45 x 4 = 180 |