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GRIDUCT 2

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