IDENTIFICATION
Griduct 128G, E 12018G
CLASSIFICATION
AWS/SFA 5.5 E12018G
DESCRIPTION
Basic coated, ultra low hydrogen high tensile low alloy steel electrode suitable for welding high tensile, fully killed fine grained low alloy steel. The electrode deposits X-ray / ultrasonic quality weld metal and can be used in all positions.
WELD METAL ANALYSIS (RANGE) %
| C | Cr | Mn | Si | S | Ni | Mo | P | V |
| 0.095 max | 0.30 - 0.75 | 1.30 - 1.80 | 0.20 - 0.50 | 0.020 max | 1.70 - 2.50 | 0.20 - 0.50 | 0.025 max | 0.05 max |
MECHANICAL PROPERTIES (RANGE)
| TS (N/mm2) | YS (N/mm2) | EL (%) (L=4D) | CVN Impact Value | |
| Temp | Joules | |||
| 850 - 950 | 720 - 800 | 16 - 22 | -51°C | 30 - 75 |
TYPICAL APPLICATIONS
• For fabrication of penstocks, earthmoving equipments, cranes and other heavy steel fabrication made from high tensile steels.
• Suitable for welding HY 80 and HY 100 steels, Q1 (N) submarine components cranes highly stressed plants.
DRYING OF THE ELECTRODES : 300 - 350°C / 2 hrs.
ASME IX QUALIFICATION : QW-432 F Number: 4, QW-442 A Number: 10
DIFFUSIBLE HYDROGEN CONTENT IN THE WELD METAL : Max. 3.0 ml / 100 g. of weld metal.
WELDING POSITION :
PACKING PARAMETERS
| Size (mm) | Length (mm) | Amps DC (+) | Packing / Box (kg) | Packing / Box (Pcs) |
| 2.5 | 350 | 60 – 80 | 5 x 4 = 20 | 160 x 4 = 640 |
| 3.15 / 3.20 | 450 | 70 – 110 | 5 x 4 = 20 | 110 x 4 = 440 |
| 4 | 450 | 100 – 155 | 5 x 4 = 20 | 70 x 4 = 280 |
| 5 | 450 | 150 - 200 | 5 x 4 = 20 | 45 x 4 = 180 |