Postalloy® DuraForge™ 2747-FCG

Postalloy® DuraForge™ 2747-FCG is a tough iron base chromium-moly-tungsten 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.

Specifications

Product Type

  • Wire
  • Flux-cored
  • Gas-shielded

Applications

  • Welding forging die impressions in hammer and press forging dies
  • Repair of deformed, broken, spalled or heat-checked areas of hydraulic presses and drop hammer forging dies
  • Filling medium deep impressions that are to be re-cut to dimensions

Weld Deposit Properties

Hardness as Welded:
45-49Rc
Hardness as Tempered:
42-45Rc
Has easily removed slag covering

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)
30-38 450-700 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