Postalloy® 301-FCG

Postalloy® 301-FCG is a high strength, crack resistant flux-cored, gas-shielded all-position welding alloy specifically designed for welding problem steels such as low alloy, high carbon or crack sensitive tool steels. Ideal for welding dissimilar steels - low alloy, spring steels, carbon steels, tool steels. The benefits of Postalloy® 301-FCG include:

  • Excellent joining characteristics - With the combination of balanced alloy chemistry and high strength, crack resistant weld deposits, the capability to weld dissimilar problem steels is outstanding.
  • Carbon has no adverse effects - Carbon, the cause of most problems associated with weld cracking and hard spots, is rendered harmless.
  • Acts as a shock absorber during operation - Since Postalloy® 301-FCG does not respond to heat-treatment and remains ductile, it has the ability to withstand heavy impact or shock loading.


Product Type

  • Flux-cored
  • Gas-shielded


  • Shafts and keyways
  • Gear tooth buildup
  • Stamping and forging dies
  • Shovel teeth and blades
  • Wear plates
  • Grousers
  • Heat-treating parts
  • Cracked steel casings
  • Jigs and fixtures
  • Chain links

Weld Deposit Properties

Electrode equivalent: Postalloy® 30
Tensile strength:
120,000 psi
Deposits cannot be flame-cut
Machinable with carbide tools

Welding Parameters

Current Type: DC Electrode Positive

Volts Amps Diameter Stick Out
Flat: 25-27 Flat: 180-200 .045" (1.2mm) Flat: 5/8"-3/4" (15.8-19mm)
Vertical: 24-26 Vertical: 150-170 .045" (1.2mm) Vertical: 5/8"-3/4" (15.8-19mm)
Overhead: 25-27 Overhead: 175-195 .045" (1.2mm) Overhead: 5/8"-3/4" (15.8-19mm)

Welding Procedure:

Gas Coverage - Argon/CO2(75/25) at a flow rate of 40 cfh

Packaging Options