IDENTIFICATION
Griduct 2, E 7018-A1
CLASSIFICATION
AWS/SFA 5.5: E7018-A1, BS 2493MoBH, DIN 8557 EMoB26
DESCRIPTION
Hydrogen controlled, medium-heavy coated basic type all position electrode depositing about 0.5% molybdenum in the weld metal. It is primarily intended for welding similar composition steels used where creep rupture strength and ductility at service temperature upto 550°C are required. The Mo content enhances resistance to hydrogen attack in chemical process plant operation. The deposited weld metal meets x-ray / radiographic code requirements.
WELD METAL ANALYSIS (RANGE) %
| C | Mn | Si | S | P | Mo |
| 0.12 max | 0.50 - 0.90 | 0.20 - 0.60 | 0.025 max | 0.030 max | 0.40 - 0.65 |
MECHANICAL PROPERTIES (RANGE)
| UTS (MPa) | YS (MPa) | EL (%) (L=4D) | CVN Impact Value | |
| Temp | Joules | |||
| 27±2°C | 80 - 180 | |||
| 500 min | 400 min | 25 min | 0°C | 70 - 150 |
| -20°C | 50 - 120 | |||
TYPICAL APPLICATIONS
• ASTM A 336 F1, A 204 A,B,C
• DIN 15Mo3 (1.5415)
• ASTM A 217 WC1, A 352 LC1
• BS 3059 Grade 243
• ASTM A 335 Grade P 1
• C-Mn steel where higher tensile strength is required.
• Chemical process plant.
REDRYING TEMPERATURE FOR ELECTRODES : 300°C / 2hrs
MONOSTRUCTURE : In the stress relived condition, microstructure consists of tempered bainite.
ASME IX QUALIFICATION : QW 432 F - NO 4, QW 442 A - NO 11
WELDING POSITION :
PACKING PARAMETERS
| Size (mm) | Length (mm) | Amps | Packing / Box (kg) | Packing / Box (Pcs) |
| AC (70V) / DC (+) | ||||
| 2.5 | 350 | 60 - 80 | 5 x 4 = 20 | 160 x 4 = 640 |
| 3.15 / 3.20 | 350 / 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 |