Postalloy® 95 and 950 Flux-coated Electrode

Joining and overlaying copper alloys, steel and cast iron. Ideal for dissimilar combinations, such as steel to copper. Excellent weldability. Provides a good combination of strength and ductility.

The arc is smooth with a consistent burn-off rate. It may be used out-of-position. The core wire of Postalloy® 95 and 950 melt well below the melting point of iron base alloys, such as steel and cast iron. This makes it ideal for applications where the use of standard steel or cast iron electrodes would be damaging to the base metal.


Product Type

  • Flux-coated Electrode


  • Bearing surfaces
  • Pumps
  • Bushings
  • Valve parts
  • Impellers
  • Gear wheels
  • Bushings
  • Corroded cast iron parts
  • Propellers
  • Galvanized steel

Weld Deposit Properties

Tensile strength:
60,000 psi
Excellent machinability

Welding Parameters

Current Type: DC Electrode Positive

Amps Diameter
80-130 1/8" (3.2mm)

Welding Procedure:

Use 95 with AC and 950 with DC Electrode Positive. Clean weld area of greases and contaminants. Remove surface oxides by filing, sanding or grinding. Preheat copper 1000 ˚F (538 ˚C), brass 600 ˚F (316 ˚C), cast iron 400 ˚F (204 ˚C). Bevel heavy sections 45°. Hold a close arc using stringer beads or a slight weave. Allow to cool and remove slag.

Packaging Options

Diameter Standard Packaging
1/8" (3.2mm) Resealable Plastic Box