Weld Mold® 9551
Patent Pending
Weld Mold 9551 has special alloying that gives it unique properties. Capable of being work hardened after welding, maximum hardness is achieved with a temper as low as 1050˚F and designed to provide superior hardness retention through 1,200°F. Designed to be used where cobalt based materials would be used on hot trim tools and shallow impression overlays.
Applications
Weld Mold 9551 is well suited for the forging industry due to its higher physical properties, Used as an overlay on punches, mandrels, hot working dies, forming rolls, prolonged high- temp areas. Extrusion dies also benefit from the higher wear capabilities.
Procedure
Remove all defects and surface contaminants. Preheat will be dictated by base metal, maintain temperature during welding utilizing short arc lengths. Peening is critical to mechanically relieve stresses when flood welding small or large cavities. It is recommended that once welding has been completed, re-established the pre-heat for 2-3 hours, with a slow cool to room temperature. Temper at 1050˚F for two hours. An increase of 1-2 points in hardness can be realized with a second temper 30⁰F below the first.
SMAW - AC/DC+
FCAW - DC+ / 92% Ar/8CO2
DC+ - Neutral Flux
Technical Data
- Class - Hot Work Die Steel CrCoMoW
- Hardness: AWRC with ttemper 42-58 & WHRC with temper 47-60
- Tensile: Up to 300 ksi
- Machinability: Tough, use carbide tools
