• Home »
• Products »
• High Tensile Strength Steel »
• PA-12018-M

PA-12018-M

AWS Speicification : A5.5 E12018M

JIS Specification : NONE

DIN Specification: DIN 757 : E795Mn2NiCrMoB 32 H10 

 

 I. APPLICATIONS:

 Welding of 90kgf/mm² class high tensile strength steel for penstocks, pressure vessels and machinery.

II. DESCRIPTIONS:

PA–12018-M is an iron powder low hydrogen type electrode and provides good usability with direct current applications in all positions. The weld metal has a good crack resistance and X-ray soundness.

III. NOTES ON USAGE:

• Dry the electrodes at 350-400ºC for one hour before use.

• Store the electrodes at 100-150oC after drying them with attention to keep away from moisture.

• Adopt back step method or strike the arc on a small steel plate prepared for this particular purpose, because arc striking on base metal is in danger of initiating cracking.

• Keep the arc as short as possible.

• Preheat at 150-200oC. The temperature varies in accordance with plate thickness and steel kind

• Pay attention not to exceed proper heat-input because excessive heat-input causes deterioration of impact values and yield strength of weld metal.

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

C	Si	Mn	Cr	Ni	Mo
0.08	0.33	1.48	0.95	1.83	0.44

 

V. TYPICAL MECHANICAL PROPERTIES OF DEPOSITED METAL:

Yield Point N/mm2 (ksi)	Tensile Strength N/mm2 (ksi)	Elongation %	Impact Value °C, J (°F, Ft-Lbs)
800 (116)	940 (136)	20	-51°, 50 (-60°, 37)

VI. WELDING POSITIONS: ALL POSITIONS

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

	Dia. x length (mm)	2.5 x 350	3.2 x 350	4.0 x 400	5.0 x 400
Current Range (Amp)	Flat	70 - 100	100 - 140	150 - 200	190 - 240
	Vertical, Overhead	60 - 60	80 - 120	120 - 160	140 - 180

 

 

 

•  philarc-pa-12018-m.pdf