NickelRod 55 Electrode


INTRODUCTION

Aufhauser NickelRod 55 is used for welding cast irons to themselves as well as for joining cast irons to mild steels. It is also employed for the repair of castings. The welds are moderately hard and require carbide tipped tools for machining. A preheat and interpass temperature of not less than 350°F (175°C) is required during welding.


GENERAL INFORMATION

Chemical Composition
Carbon Manganese Silicon Iron Copper Nickel Sulfur Phosphorus
0.9 0.74 2.09 40.2 1.9 54.5 0.006 0.012

Note: All values are maximum percentage, unless shown in range.

PHYSICAL and MECHANICAL PROPERTIES
Tensile Strength 84,000 psi (580 MPa)
Yield 59,500 psi (390 MPa)
Elongation, min. % 8%

 

Recommended Welding Parameters
Wire Diameter Amps
3/32" 65-75
1/8" 90-105
5/32" 120-135
3/16" 135-155

(For vertical welding amperages are to be reduced by 10-15 amps.)

 

SPECIFICATIONS MEET or EXCEED
AWS A5.15m Class ENiFe-CI

 

 
STANDARD SIZES AND DIAMETERS
Diameters 3/32", 1/8", 5/32", 3/16"  

 

 
STANDARD PACKAGES
3/32" 8# Can
1/8" 10# Can
5/32" 10# Can
3/16" 10# Can

 

NICKELROD 55 & 99 COMPARISON

 
NickelRod 99
NickelRod 55
General Description High nickel, extruded electrode for production and repair of cast iron. Fabrication and repair. Pump housings, valves, castings, cast and malleable fittings. Lower nickel content electrode for production, salvage and repair of all cast irons. Fabrication and repair. Pump housings, valves, cast and malleable fittings.
Weld Deposit Good machinability. Very hard weld deposit, predominantly nickel. More easily machineable. High strength.
Build-up, Fill Holes, Repair cracks In all types of cast iron Gray or alloyed cast irons
Out-of-Position Characteristics very good good
Parts Dismantling often not required often required
Color Match Close color match to cast irons Close color match to cast irons
Tensile Strength up to 50,000 psi up to 70,000 psi
AWS A5.15 ENiCl ENiFeCl
Pre-Heating Not necessary, although for large parts, suggest pre-heating to 350°F min. Min. pre-heat of 350°F required
Weld Fusion Zone Broader. Larger HAZ. More narrow. Reduces hard areas of HAZ to a minimum.
Cost Higher, due to high nickel content More economical, due to lower nickel content

SUGGESTED PROCEDURES

  • Use AC or DC reverse polarity.
  • Vee out cracks with Aufhauser Groovees cutting/gouging electrode or by grinding.
  • Pre-heat heavy castings to 350°F min. for best results with NickelRod 55. (Only necessary for large parts with NickelRod 99.)
  • Direct the arc on deposited metal with the electrode at a slight angle in the direction of travel.
  • With NickelRod 99, use a short arc; use stringer beads; skip or back-step weld and peen to relieve stresses; cool casting slowly.
  • With NickelRod 55, peen lightly between passes and use a skip or back-step welding technique.
  • Cool casting slowly with either rod.