For high strength alloy and problem steels. Also for Cor-Ten wear resistant and nickel bearing steels. Polaris A avoids the moisture problems encountered with conventional low hydrogen electrodes. The exceptional elongation of Polaris A makes it ideal for applications involving impact or vibration. Polaris A produces sound, heat-treatable welds even on sulfur or caustic contaminated steels. Welds have extraordinary strength and ductility even at sub-zero temperatures. Deposits are easy to apply in all positions and are free machining.
Applications include all mining and construction equipment, boilers, tanks, piping, truck and bus frames, and all crack sensitive steels. Polaris A provides a good pad for hard surfacing due to its extraordinary ductility. Download PDF
Features
Excellent Strength 98,000 psi
Excellent AC Stability
Welds Cast Steel
Moisture Proof, Low Hydrogen
Avoids Hydrogen Embrittlement
Can Be Torch Cut
All Positions
Outstanding Ductility 34% Elongation
Free Machining
Excellent Sub-Zero Properties
X-Ray Quality Welds
No Undercutting
Stable Arc
Applications
Polaris A applications include all mining and construction equipment, boilers, tanks, piping, truck and bus frames, and all crack sensitive steels.
Ideal for Heavy Equipment repair
Excellent in Cold Weather environments
Crack resistant in high vibration applications
Recommended Settings
AC or DCEP (+/- 20% of recommended settings)
Recommended Settings:
3/32” Diameter – 85 amps
1/8” Diameter – 120 amps
5/32″ Diameter – 160 amps
3/16″ Diameter – 220 amps
Best Practices
Clean and bevel as required.
Preheat heavy sections.
Use a close arc length.
For vertical welds, lower amperage, weld from bottom up and weave, do not whip.
Overhead and horizontal use stringer beads.
Down hand maximum weave: 2-1/2 times electrode diameter.
