logo-gee
GRIDUCT 138G

IDENTIFICATION
Griduct 138G, E 12018G

CLASSIFICATION
AWS/SFA 5.5 : E12018G,
DIN EN 757 E894 Mn2 Ni1 Cr Mo B42 H5

DESCRIPTION
Heavy coated, hydrogen controlled, all-position electrode depositing, tough and crack free welded joints. Weld deposits is of extremely high purity and very low hydrogen content. Deposited welds are of X-ray quality.

WELD METAL ANALYSIS (RANGE) %

C Cr S Mn Ni Si Mo P V
0.06 max 0.70 max 0.015 max 1.65 max 2.40 max 0.48 max 0.50 max 0.015 max 0.02 max

MECHANICAL PROPERTIES (RANGE)

UTS (MPa) PS (MPa) EL (%) (L=4D) CVN Impact Value
      Temp Joules
950 min 890 min 14 - 20 27°C 70 - 150
      -40°C 70 min

TYPICAL APPLICATIONS
•    For welding Q & T high tensile steels type HY 130 and equivalent Normalised+tempered five grain structural steels with yield stress up to 900 MPa.
•    For welding BRINAR 400 / DILLIDUR 400 steel.

SPECIAL INSTRUCTIONS FOR WELDING
•    Maintain preheat & interpass temperature in the range 100-120°C.
•    Use lower dia electrode with minimum heat in-put to get desired structure & mechanical properties.
•    When welding is completed, maintain temperature of 200-250°C for 4-6 hours for removing Diffusible Hydrogen from HAZ and weld metal.
REDRYING OF ELECTRODES : 300-350°C / 2 hrs.
DIFFUSIBLE HYDROGEN CONTENT IN THE WELD METAL : max. 4.0 ml / 100 g of weld metal.

WELDING POSITION :

PACKING PARAMETERS

Size (mm) Length (mm) Amps Packing / Box (kg) Packing / Box (Pcs)
AC (70 OCV) / DC (+)
2.5 350 65 -95 5 x 4 = 20 160 x 4 = 640
3.15 / 3.20 450 90 - 135 5 x 4 = 20 110 x 4 = 440
4 450 140 - 185 5 x 4 = 20 70 x 4 = 280
5 450 180 - 240 5 x 4 = 20 45 x 4 = 180