Weld Mold® 705
Weld Mold 705 is a Nickel-Iron-Chromium alloy. Weld deposits are machinable, long wearing and develop a high polish while in service.
Applications
Primarily used for underlaying on all types of iron draw dies, including gray, nodular, ductile and special cast alloys. Also used for joining steel to iron where high strength is required as encountered when die inserts are installed. Use for heavy buildup and underlays prior to surfacing with a harder alloy. Exceptional results are realized when welding cracked high alloy tool steel dies and other high carbon alloy steels.
Procedure
All rust, scale drawing compound and oil should be removed from the surface to be welded. Remove all cracks to form a “U” shape so that the weld metal bonds in the root. To ensure successful satisfactory welds the operator should employ a 500°F preheat. Short stringer beads are recommended approximately 2″ long, with rapid peening between beads. When building up large surfaces such as on automotive draw dies, skip weld to minimize localized heat input and avoid as many stresses as possible.
SMAW - AC or DC+
FCAW - DC+, 75% Ar 25% CO2
Technical Data
- Available Processes: SMAW and FCAW
- Tensile Strength: Up to 154,000 psi
- Machinability: Good
- Hardness: Rockwell C 34-36, as Welded
Rockwell C 37-40, Work Hardened
- Elongation: Up to 35%
- Heat Treatment: Non-Heat Treatable
- Class: NiFeCr
