Description
Metalink® P7O4 Aluminum Bronze
Aluminum Bronze alloy designed specifically for thermal spray applications. Produces extremely well bonded coatings with excellent machine-ability in both twin wire arc and combustion gun applications. P704 has good corrosion resistance and resistance to mechani-cal and thermal shock. Particularly suited to general purpose dimensional restoration and even decorative work.
Surface Preparation Information Surface should be clean, white metal, with no oxides (rust), dirt, grease, or oil on the surface to be coated. Note: It is best not to handle surfaces after cleaning. Recommended method of preparation is to grit blast with 24 mesh aluminum oxide or hardened steel shot, rough grind, or rough machine in a lathe (lightly threaded preferable) in order to obtain the proper profile.
Recommended Spray Parameters For use in a Diablo Twin Wire Arc System: 50 to 60psi Air Pressure, 27 to 29 volts, 200amps, 4 to 7″ standoff is a good starting point, but may be adjusted upwards for maximum deposition. Other settings may be required for alternate equipment.
Parameters Through Metalink 12M or 14M: 44 oxy, 39 act, 52 air, (as indicated on flowmeters)
Packaging Information Part # Description
P704A – 14ga (1.6mm) 25# LLW Spools
P704C – .125in (3.2mm) 25# Coils
Deposit Characteristics
Typical Hardness 67Rb
Bond Strength 7000psi
Deposit Efficiency 75% (up to 90% with combustion guns)
Coverage 0.9oz/ft2/mil
Applications
• Aluminum Bronze Components
• Bond Coat
• Bearing Areas
