Postalloy® DuraBuild™ 2991-SA

Postalloy® DuraBuild™ 2991-SA is a low alloy submerged-arc build-up wire with very good resistance to impact, compression loading, and plastic deformation. It can also be used as a base layer for harder, more wear resistant products like Postalloy® DuraBuild™ 2992-SA or Postalloy® DuraBuild™ 2993-SA.. Also good when an easily machined "as welded" deposit is required. Use on carbon and low alloy steels.

Postalloy® 2991-SA contains small amounts of refined submerged-arc flux in the core of the wire, greatly helping slag release, especially when welding highly preheated parts.


Product Type

  • Submerged Arc Wire


  • Tractors, Idlers, and Rollers
  • Crane wheels
  • Dredge ladder rolls
  • Mine car wheels

Weld Deposit Properties

Average Hardness 2 and 3 layers::
Deposits can be flame-cut
Deposit Thickness:
Deposits are fully machinable

Welding Parameters

Current Type: DC Electrode Positive

Volts Amps Diameter Stick Out
25-28 300-400 3/32" (2.4mm) 1"-11⁄4"(25-32mm)
26-30 400-500 1/8" (3.2mm) 11⁄4"-11⁄2"(32-38mm)
29-32 425-540 5/32" (4.0mm) 11⁄4"-11⁄2"(32-38mm)

Welding Procedure:

Flux: Lincoln 802 Flux

Packaging Options

Diameter Standard Packaging
3/32" (2.4mm) 500 lb (226.80 kg) drum
1/8" (3.2mm) 500 lb (226.80 kg) drum
5/32" (4.0mm) 500 lb (226.80 kg) drum