Postalloy® 2991-SA
Postalloy® 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® 2992-SA or Postalloy® 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.
Specifications
Product Type
- Submerged Arc Wire
Applications
- Tractors, Idlers, and Rollers
- Crane wheels
- Dredge ladder rolls
- Mine car wheels
Weld Deposit Properties
- Average Hardness 2 and 3 layers::
- 27-32Rc
- Deposits can be flame-cut
- Deposit Thickness:
- Unlimited
- Machinable:
- 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 |