Postalloy® DuraHard™ BR5-SA

Postalloy® DuraHard™ BR5-SA is a low alloy tubular welding wire for submerged-arc welding. This alloy is designed specifically for brake rims on oilfield drilling rigs. Proper welding procedures, including proper preheat and post-heat, should be followed to avoid circumferential cracks. Postalloy® BR5-SA is limited to four layers. For more than four layers an under base of Postalloy® 2891-SA should be used. Tungsten Carbide tools are required for machining.


Product Type

  • Wire
  • Submerged Arc Wire


  • Oilfield brake rims
  • Rollers
  • Mine car wheels
  • Charging car wheels
  • Idlers
  • Arch wheels
  • Steel mill table rolls

Weld Deposit Properties

Pre-heat may be required for certain low alloy, high carbon steel
Deposit Thickness:
3 to 4 layers
44Rc - 47Rc

Welding Parameters

Current Type: DC Electrode Positive

Volts Amps Diameter Stick Out
29-32 425-540 5/32" (4.0mm) 1¼"-1½"(33-38mm)

Welding Procedure:

Use neutral Flux.

Position : Flat

Packaging Options

Diameter Standard Packaging
5/32" (4.0mm) 55 lb (22.70kg) coil, 500 lb (226.80kg) drum