GRIDUCT 2

IDENTIFICATION :GRIDUCT 2 E7018-A1

CLASSIFICATION : AWS/SFA 5.5: E7018-A1, BS 2493MoBH DIN 8557 EMoB26

CHARACTERISTICS :

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.

TYPICAL APPLICATION :

  • 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/2 hrs

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 : 1G, 2F , 3G, 4G

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

ALL WELD MECHANICAL PROPERTIES PWHT 620°C/1hr :

Ultimate Tensile Strength MPa 0.2% Proof stress MPa Elongation (%) (L=4D) Charpy V-notch Impact strength
500Min 400Min 25 min Temp Joules
27+2° C
0° C
-20° C
80-180
70-150
50-120

RECOMMENDED CURRENT AND PACKING DATA :

SIZE (mm) LENGTH (mm) AMPS AC (70V)DC(+) PACKING PER BOX WEIGHT 1000 Pcs, Kg.
2.50 350 60-80 160X4=640 19.5
3.20 450 90-130 110X4=440 43.00
4.00 450 140-190 70X4=280 66.00
5.00 450 190-250 45X4=180 99.00

Approved By :