GFC 81B2

SPECIFICATION : AWS/SFA 5.29: E81T1-B2C, ASME – IIC/SFA-5.29-E 81T1-B2C

CHARACTERISTICS :

Tubular rutile flux-cored wire for single or multipass welding of 1.25 Cr-0.50 Mo heat resistant steels used for steam pipes of boilers of thermal power plant and similar types of steels, with CO2 shielding gas. The good weldability in all positions, excellent bead appearance, less spatter, a fast freezing and easy to remove slag. Deposited welds arc of radiographic quality.

TYPICAL APPLICATION :

Power Plant equipments, pipes and Cr-Mo steels having requirements of high creep resistance.

Alloyed Steel:

ASTM, A335 Grade P11 and P12 or equivalent.

WELD METAL ANALYSIS (RANGE) % :

C Mn Si S P Cr Mo
0.05-0.12 0.50-1.25 0.30-0.80 0.030 max 0.030 max 1.0-1.50 0.40-0.65

MECHANICAL PROPERTIES :

After PWHT of 690 +  14°C/ 1 hour.

Tensile Strength MPa Yield Stress MPa

Elongation

(%) (L=4D)

560 min 490 min  19 min

Shielding Gas: CO2

;Flow Rate: 14-20 l/min

RECOMMENDED WELDING PARAMETERS :

Size (mm)

Amps DC (+)

Weight of the spool (KG)

1.2 120-250 15
1.6 180-350 15

Approved By :