Weld Mold® 4300
Weld Mold 4300 is an aluminum bronze alloy used primarily for surfacing and cladding applications. Weld deposits exhibit the highest yield strength and hardness in the Weld Mold family of aluminum bronzes.
Ideal for rebuilding or fabricating new iron base dies used for forming or drawing low alloy and stainless steels. Commonly used on Ampco 22® and 25® casting. Some of the advantages of using 4300 over other aluminum bronze alloys are freedom from galling, scratching and metal pickup as well as increased die life.
For best results, clean area of all foreign matter and debris. Either stringer or weave beads may be used with equal success. Weaving should be limited to a maximum of 2 ½ to 3 times the diameter of the electrode. Hesitating at the sides of the weld joint will prevent undercutting. In overlaying iron base metals, apply the first layer at the lowest amperage possible and weave to keep the base metal dilution to a minimum. Apply three passes where possible. A pre-heat of 1000°F is recommended when welding on pure copper.
SMAW - DC+
GTAW - ACHF or DC-
100% He or 100% Ar
Use 2% Thorium Tungsten
- Available Processes: SMAW and GTAW
- Alloy Type: AWS E Cu Al E
- Tensile Strength: Al Bronze – 80,000 PSI.steel – 73,000 PSI
- Al Bronze – 316 BHN, Steel – 300 BHN
- Class: CuAl-E