• Home »
• Products »
• High Tensile Strength Steel »
• PA-7018-1

PA-7018-1

AWS Specification: AWS A5.1 E7018-1

JIS Specification : NONE

Other Specification: DIN EN ISO 2560-A: E 42 5 B 32 H5

 

I. APPLICATIONS:

Shielded metal arc welding for LPG tankers, LPG storage tanks, equipment for low-temperature service,

ships and offshore structures to be used at low-temperature districts .

II. DESCRIPTIONS :

An iron powder extra-low hydrogen type covered electrode to be used in all-position welding of 400-490N/mm² high tensile steel for low-temperature application. It provides excellent notch toughness at low-temperatures and good usability .

III. NOTES ON USAGE :

• Welding heat input must be controlled in order to get required impact value, since notch toughness tends to be decreased by excessive heat input.

• Preheating at 50-100°C is needed depending upon the kind of steel and its thickness.

• Dry the electrodes at 350-400°C for about one hour before use.

• Take the backstep method or strike the arc previously on a small steel piece to prevent blowholes at the arc striking in a groove.

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

C	Si	Mn	P	S
0.08	0.53	1.43	0.009	0.005

V. TYPICAL MECHANICAL PROPERTIES OF WELD METAL:

Yield Point N/mm2 (ksi)	Tensile Strength N/mm2 (ksi)	Elongation %	Impact Value °C, J (°F, Ft-Lbs)
540 (78)	600 (87)	30	-46°, 115 (-51°, 85)

VI. WELDING POSITIONS: ALL POSITIONS

VII. SIZES & RECOMMENDED CURRENT RANGE: AC or DC (+)

Diameter, mm Length, mm		2.5 350	3.2 350	4.0 400	5.0 450
Current, A	F	55-85	90-120	120-170	170-200
	V, OH	50-80	80-110	100-160	140-190

 

APPROVAL: ABS

 

 

•  philarc-p-7018-1 .pdf