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GRIDUCT 86 B8

IDENTIFICATION
Griduct 86B8, E 8016-B8

CLASSIFICATION
AWS/SFA 5.5: E 8016-B8, IS 1395: E 55B - 226Fe,
BS: 2493E1CrMoBH, DIN 8575-84 ECrMo1B20+

DESCRIPTION
A heavy coated, low hydrogen, all-position, except vertical down, Synthetic electrode which deposits 1.25% Cr / 0.5% Mo weld metal. It is intended for welding creep resisting steels of similar composition, used in power generating plant operating at temperatures upto 570°C. The welds are of X-ray quality.

WELD METAL ANALYSIS (RANGE) %

C Mn Si S P Cr Mo
0.05 - 0.10 0.5 - 0.9 0.2 - 0.6 0.025 max 0.03 max 1.0 - 1.50 0.4 - 0.65

MECHANICAL PROPERTIES (RANGE)

UTS (MPa) PS (MPa) EL (%) (L=4D) CVN Impact Value Fillet Weld test
550 - 690 460 - 590 19 - 26 Temp Joules Satisfactory
27°C 55 - 100

TYPICAL APPLICATIONS
•    ASTM A 335 grades P11 and P12 ASTM A 155 grades ½ C, 1 Cr, 1¼ Cr, A 182F11, DIN 13 CrMo44, GS-17CrMo55, BS 3604 grades 620 and 621.
•    Ideal for welding Chromium-Molybdenum alloy steels (0.5Cr-0.5Mo, Icr-0.5Mo, 1.25Cr-0.5Mo), boilers, pressure vessels, headers, high pressure piping, heat exchangers and condensers, power generation, oil refineries, petrochemical industries.

ASME QUALIFICATION : QW–432 F. NO4, QW-442 A NO. 4
RECOMMENDED REDRYING : 300°C / 2 hrs, (Max. 5 times, total 10 hrs max.)
MOISTURE IN THE FLUX COATING : 0.3% by weight, maximum
DIFFUSIBLE HYDROGEN CONTENT IN THE WELD METAL : Max 5 ml / 100g. of weld metal
RECOMMENDED PREHEATING & INTERPASS TEMPRATURE : 163°C-191°C
MICROSTRUCTURE : After PWHT, the microstructure consists of tempered bainite.

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 / 3.20 450 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