GRIDUCT-6M

IDENTIFICATION : GRIDUCT- 6M
CLASSIFICATION : AWS/SFA 5.5: E8018G

CHARACTERISTICS :

A basic coated, low-hydrogen electrode producing a 2.5 % nickel weld metal. The all position electrode is designed for applications demanding high yield strength and excellent fracture toughness at temperature down to minus 60°C. The welds are of radiographic quality

TYPICAL APPLICATION :

  • Off-shore fabrication, LPG tanks
  • Fabrication of storage tanks, process plant and associated pipe work
  • ASTM A335-Grade 6 Pipe
  • ASTM A350-Grade LF1/LF2 forgings
  • ASTM A352-Grade LC2 castings

MICROSTURUCTURE : Ferritic with a component of acicular ferrite

ASME IX QUALIFICATION : QW-432 F NO 4, QW-442 A NO 10

REDRYING TEMPERATURE : 250-300°C / 1-2 hrs

WELD METAL ANALYSIS (RANGE) %:

C Mn Ni Si S P
0.09 max 0.50- 1.0 2.0- 2.75 0.20-0.50 0.025 max 0.025 max

MECHANICAL PROPERTIES (RANGE) PWHT AT 605°C/IHR :

Tensile Strength MPa Yield Stress MPa Elongation (%) (L=4D) Charpy V-notch impact strength, in joules
760-840 680-760 20 min Temp Joules
- 20°C 80-120
- 40°C 60-110
- 50°C 50-90

RECOMMENDED CURRENT AND PACKING DATA :

SIZE (mm) LENGTH (mm) AMPS AC/DC(+/-) PACKING/BOX
2.50 350 70-110 150X4=600
3.15/3.20 450 90-140 100X4=400
4.00 450 140-190 65X4=260
5.00 450 180-250 45X4=180