IDENTIFICATION
Griduct 75B2L, E 7015B2L

CLASSIFICATION
AWS A5.5: E 7015 B2L

DESCRIPTION
A heavy coated, basic type, low hydrogen all-position, except vertical down, electrode,  which deposits 1.25% Cr / 0.5% Mo weld metal. The electrode is synthetic type and 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) %

MECHANICAL PROPERTIES (RANGE)

TYPICAL APPLICATIONS

ASTM A 335 grades P11 and P12 ASTM A 155 grades ½ C, 1 Cr, 1 ¼ Cr, A182F11, 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.

WELDING PROCEDURE : Use short arc length. Weaving of electrodes, if necessary should be done at slow speed and keeping a short arc. The electrodes should be used in perfectly dry condition.

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.)

RECOMMENDED PREHEAT & INTERPASS TEMP. : 165°C - 190°C

MOISTURE IN THE FLUX COATING : 0.3% by weight, maximum

DIFFUSIBLE HYDROGEN CONTENT IN THE WELD METAL : Max 5 ml / 100 gm of weld metal

MICROSTRUCTURE : After PWHT, the microstructure consists of tempered bainite.

WELDING POSITION :

PACKING PARAMETERS