Postalloy® DuraForge™ 2756-FCG

Postalloy® DuraForge™ 2756-FCG is a modified 5% chrome-tungsten-moly-vanadium enriched welding alloy. Due to additional moly and vanadium, DuraForge™ 2756-FCG is more wear resistant than Postalloy® DuraForge™ 2755-FCG. Used to upgrade standard AISI H-12 hot-working tool steels. Water spray coolants should be avoided.

Specifications

Product Type

  • Wire
  • Flux-cored
  • Gas-shielded

Applications

  • Primarily used to repair and rebuild flash lines on press forging dies and is also used to overlay shallow impression dies
  • Use Postalloy® DuraForge™ 2747-FCG as an intermediate build-up on deeper impressions

Weld Deposit Properties

Heat Treatment:
H-12 Procedure
Has easily removed slag covering
A 3/8" overlay would be the maximum
Hardness:
53Rc - 57Rc

Welding Parameters

Current Type : DC Electrode Positive

Volts Amps Diameter Stick Out
30-31 300-310 1/16" (1.6mm) 1“ (25mm)
26-32 250-450 3/32" (2.4mm) 1¼" (32mm)

Welding Procedure:

Shielding Gas:75/25 Argon/CO2, 80/20 Argon/CO2, 90/10 Argon/CO2, 92/8 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 Standard Packaging Available
1/16" (1.6mm) 33 lb (15kgs) spool 55 lb (25kgs) coil
3/32" (2.4mm) 55 lb (25kgs) coil