Griduct B1, E8018-B1
AWS/SFA 5.5: E 8018-B1
A heavy coated, low hydrogen, all-position, except vertical down synthetic electrode which deposits 0.50% Cr, 0.5%Mo weld metal. It is intended for welding creep resisting steels of similar composition, used in power generating plant. The welds are of X-ray quality.
WELD METAL ANALYSIS (RANGE) %
MECHANICAL PROPERTIES (RANGE)
Ideal for welding Chromium-Molybdenum alloy steels (0.5Cr-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, and 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 :