• Home »
• Products »
• Heat Resisting Steel Electrodes »
• PA-7018-A1

PA-7018-A1

AWS Specification :AWS A5.5 E7018-A1

JIS Specification: NONE

Other Specification:DIN 8575 E Mo B 26

 

I. APPLICATIONS:

Welding of 0.5% Mo steel used for high temperature and high pressure boiler, pressure piping and tubing and other pressure vessel, chemical and oil refining industries.

II. DESCRIPTIONS:

PA-7018-A1 is an iron powder low hydrogen type electrode for all-position welding which provides the weld metal of 0.5% Mo.

III. NOTES ON USAGE:

• Dry the electrodes at 325-375ºC for about one hour before use.

• Preheat at 100-200ºC and post heat at 620-680ºC.

• Adopt back step method or strike the arc on a small steel plate prepared for this particular purpose to prevent blowholes at the arc starting.

• Keep the arc as short as possible.

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

C	Si	Mn	P	S	Mo
0.08	0.54	0.78	0.015	0.010	0.56

V. TYPICAL MECHANICAL PROPERTIES OF WELD METAL:

Yield Strength N/mm2 (Ksi)	Tensile Strength N/mm2 (Ksi)	Elongation	PWHT
590 (86)	680 (99)	28	620 ºCx 2 hrs

VI. WELDING POSITIONS: ALL POSITIONS

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

Diameter (mm)		2.6	3.2	4.0	5.0	6.0
Length (mm)		350	350	400	400	450
Amp.	F	50-90	80-130	130-190	180-240	230-300
	V & OH	40-80	70-120	110-170	150-200	-

 

 

 

 

•  philarc-pa-7018-a1.pdf