Tru-Core® FC 81T-Ni1M is a low alloy steel electrode for gas shielded, flux cored arc welding of those carbon and low alloy steels requiring a minimum tensile strength of 80 ksi and good CVN values at temperatures of -40°F and lower. This electrode is intended for welding in all positions, both single and multiple pass welds, using a shielding gas blend of 75- 80% Argon/Carbon Dioxide. The arc transfer is a smooth, small droplet mode, with very little spatter residue. The slag freezes quickly enough to facilitate welding in all positions, but provides the type of flow and wetting properties to allow good bead geometry and tie in, even in horizontal fillets.


Excellent mechanical properties

Fast-freezing slag system

Good bead geometry

Smooth arc transfer

Good low-temperature CVN properties

Virtually no spatter

Excellent feedability

Better sidewall fusion than solid electrodes


Tru-Core® FC 81T-Ni1M is well suited to those applications where any combination of all position welding, good welder appeal, a minimum tensile strength of 80 ksi, good CVN values at lower temperatures, and the ability to weld on plate thicknesses from ¼” to heavy plate sections is required.

Some examples are:

  • Offshore oil structures
  • Subsea components of oil and gas systems
  • Earthmoving equipment
  • Mining machinery
  • Power generation equipment
  • Shipbuilding


75-80% Argon/Balance CO2

Flow Rate: 35-45 CFH


All position welding is possible when using the correct shielding gas blends, welding process and welding parameters.


Welding wire should be stored in a dry, enclosed environment and in its originally-sealed package.


Go to Product Page in our Welding Wire Catalog (printable)

Go to Technical Tables in our Welding Wire Catalog (printable)


Stillwater, Oklahoma


AWS A5.29: E81T1-Ni1M H8
ASME SFA 5.29: E81T1-Ni1M H8