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PA-7028

AWS Specification: AWS A5.1 E7028

JIS Specification : D5026

Other Spcification: NONE

 

I. APPLICATIONS:

Fillet welding of 50 kgf/mm² class tensile strength steel constructing ships, bridges, buildings and other structures.

II. DESCRIPTIONS:

• Iron powder low hydrogen type electrode designed for welding 50 kgf/mm² class tensile strength steels. An extremely small amount of hydrogen in the deposited metal ensures good mechanical properties.

• A large quantity of iron powder in the covering ensures high efficiency.

• Stable, arc, smooth bead appearance and easy-to-remove slag; usability particularly outstanding in horizontal fillet welding.

• Improved operational efficiency can be expected through combined use of long electrodes and gravity welding equipment.

III. NOTES ON USAGE:

• Dry before use at 300-350°C for approximately 60 minutes

• Pits or blowholes may occur with welds in excessively primer-coated steel plates

• The ideal ration of electrode length consumed to bead length deposited is between 1:1.2 and 1:1.4.

IV. TYPICAL CHEMICAL COMPOSITION OF WELD METAL (%):

C	Si	Mn	P	S
0.07	0.23	0.99	0.01	0.01

V. TYPICAL MECHANICAL PROPERTIES OF WELD METAL:

Tensile Strength N/mm2 (Ksi)	Yield point N/mm2(Kgf/mm2)	Elongation %	Impact Value 0ºC, J (ºF, Ft.lbs)
540 (78)	490 (71)	28	-29.80 (-20.59)

VI. WELDING POSITIONS: FLAT AND FILLET

VII. SIZE AND RECOMMENDED CURRENT RANGE (AC or DC +):

Diameter (mm)		4.0	5.0	6.0
Length (mm)		450	450	450
Ampere	Flat	150 - 190	180 - 220	250 - 320

 

 

 

•  philarc-pa-7028 .pdf