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Nickelarc 187

AWS Specification : AWS A5.6 E CuNi

JIS Specification: NONE

Other Specification: NONE

 

I. APPLICATIONS:

Welding of cupro-nickel clad steel. Build-up welding carbon steel. Welding of similar and dissimilar metals such as various copper alloys.

     II. DESCRIPTION:

Nickelarc 187 is a DC arc welding electrode which gives 70% Cu-30% Ni Cupro-nickel. The weld metal shows good corrosion resistant fatigue. Therefore it is suitable for joining and build-up welding of heat exchangers, distillers, chemical industry equipments and etc.

    III. NOTES ON USAGE:

• Use DC reverse polarity (DC+) current.

• Preheating is not necessary and avoid continuous welding, keep the interpass temperature under 100ºC.

• The arc length should be short as possible and adopt straight bead method.

• It is necessary no to use excessive current in order to prevent the dilution from base metal for build-up welding of carbon steel.

• Dry the electrodes at 200-250ºC for 30-60 minutes before use.

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

Si	Mn	Fe	Ni	Cu
0.26	1.15	0.65	30.22	Bal.

V. TYPICAL MECHANICAL PROPERTIES OF WELD METAL:

Yield Point N/mm2 (ksi)	Tensile Strength N/mm2 (ksi)	Elongation %
327 (47)	425 (62)	38

VI. WELDING POSITIONS: FLAT, FILLET, VERTICAL UP, HORIZONTAL, OVERHEAD

VII. SIZES AVAILABLE AND RECOMMENDED CURRENTS: DC (+)

Size (mm)	Dia.		3.2	4.0	5.0
	Length		350	350	350
Current Range		Flat	70~110	100~150	130~180
Amp		Vertical & OH	65~105	95~140	-

 

 

 

 

•  philarc-nickelarc 187.pdf