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.
Specifications
Product Type
- Wire
- Submerged Arc Wire
Applications
- Oilfield brake rims
- Rollers
- Mine car wheels
- Charging car wheels
- Idlers
- Arch wheels
- Steel mill table rolls
Weld Deposit Properties
- Additional:
- Pre-heat may be required for certain low alloy, high carbon steel
- Deposit Thickness:
- 3 to 4 layers
- Machinable:
- Machinable
- Hardness:
- 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 |