GRIDUCT 98G

IDENTIFICATION : GRIDUCT-98G E9018G
CLASSIFICATION : AWS/SFA 5.5 : E 9018 G DIN 8529 ESY 42761 NiBH5

CHARACTERISTICS :

A basic coated, low hydrogen electrode depositing tough and crack free weld metal. The electrode has a very good operability in all positions except vertical down. The weld metal meets X-ray quality requirements.

TYPICAL APPLICATIONS :

For welding high tensile steels used for pressure vessels and other applications where high strength must be maintained after extended PWHT cycles such as normalizing and stress relieving.A516 grade 70 steel subjected to normalizing and stress relieving cycles ASTM A508 class 1, 1a, 2, 3.ASTM A533 Type A-D class 1 and 2, etc. SAILMA 450HI, micro-alloyed steel.

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

MICROSTRUCTURE : In the PWHT condition, the microstructure consists mainly of tempered high strength barnite.

DIFFUSIBLE HYDROGEN CONTENT : 4 ml/100 g. max

WELD METAL ANALYSIS (RANGE) %:

C Mn Si S Ni Mo P Cu
0.09 max 1.0-1.5 0.20-0.45 0.02 max 0.8-1.45 0.3-0.50 0.025 max 0.10 max

MECHANICAL PROPERTIES (RANGE):

PWHT Tensile Strength MPa Yield Strength MPa Elongation %(L=4D) Charpy V-notch impact strength in joules
Temp Joule
As welded 620-780 550 min 20 min -40°C 60-120
-40°C 50-100
Normalizing 900°C/2 hrs + SR 610°C/3 hrs 520-600 450-540 22-32

URRENT CONDITION AND PACKING SPECIFICATION :

SIZE (mm) LENGTH (mm) AMPS AC/DC (+) PACKING PER BOX WEIGHT 1000 Pcs
2.50 350 60-100 160X4=640 19.0
3.15 450 80-130 110X4=440 42.0
4.00 450 130-180 70X4=280 67.00
5.00 450 160-220 45 X 4=180 104.0