Postalloy® DuraForge™ 2742-FCG
Postalloy® DuraForge™ 2742-FCG is a tough iron base chromium-tungsten-moly hot-working tool steel welding alloy. It is machinable in the "as welded" condition. It has very good thermal fatigue resistance and excellent resistance to heat checking when subjected to water quenching.
Primary applications include overlays of hot-work forging die impressions and hardfacing of steel scrap demolition shear jaws made by Labounty, Allied-Gator, Imax, Tramac and others. Hardface deposits are the perfect hardness to resist crushing and spalling
Specifications
Product Type
- Flux-cored
- Gas-shielded
Applications
- See above
Weld Deposit Properties
- Additional:
- Has a easily removed slag covering
- Hardness:
- 38Rc - 43Rc
Welding Parameters
Current Type: DC Electrode Positive
| Volts | Amps | Diameter | Stick Out |
|---|---|---|---|
| 30-31 | 300-310 | 1/16" (1.6mm) | 1" (25mm) |
| 28-32 | 270-450 | 3/32" (2.4mm) | 1¼" (32mm) |
| 20-40 | 400-800 | 1/8" (3.2mm) | 1½" (38mm) |
Welding Procedure:
Gas Cover Options (for all wire sizes):
75/25 Argon/CO2, 80/20 Argon/CO2, 90/10 Argon/CO2, 98/2 Argon/CO2. Slow Cooling after welding is extremely important to reduce stress build-up and minimize the risk of cracking. Therefore, using this wire requires a minimum of preheat from 600-800°F (315-427 °C) depending on size of the part and composition of the base metal. Throughout welding operation, limit interpass temperature to 900 °F (480 °C). After welding, the part should be returned to the preheat furnace to allow the temperature throughout the part to equalize.
Packaging Options
| Diameter | Standard Packaging |
|---|---|
| 1/16" (1.6mm) | 33 lb (15kgs) spool |
| 3/32" (2.4mm) | 55 lb (25kgs) coil |
| 1/8" (3.2mm) | 55 lb (25kgs) coil |