Madison Chemical introduces RP GOLD, a versatile water-based rust preventive that provides long-term indoor storage protection for ferrous and copper alloys. Applied to previously cleaned parts by immersion, manual spray or recirculated spray methods, RP GOLD leaves a nearly invisible, dry-to-the-touch film that provides up to four weeks of protection (or longer when used at higher concentrations).
This proven, water-based compound contains no oil or solvent, resulting in low use. Environmentally friendly RP GOLD does not contain nitrite, silicate, phosphate, hydroxide, silicone, chlorine, phenol or sulfur. It is suitable for treating parts prior to further fabrication or additional chemical treatment such as conversion coating or electroplating.
RP GOLD is safe for ferrous and copper alloys when used as directed. For most applications, it is used at 5 to 10 percent by volume in water from 70° F to 160° F. Heating the solution will lessen the time required for drying and may improve overall protection results. Concentrations up to 20.0 percent may be used for longer rust protection time.
Prolonged contact (greater than 24 hours) with aluminum and zinc alloys may case a staining effect with some reaction. Determine compatibility with soft metals/alloys prior to using RP GOLD on a production scale.
Treated parts should not be stacked or nested together until dry. Drying methods such as high velocity/high pressure and centrifugal spinning may reduce film thickness and subsequently lessen rust protection and should be tested beforehand.
Related Glossary Terms
Substances having metallic properties and being composed of two or more chemical elements of which at least one is a metal.
- copper alloys
Copper containing specified quantities of alloying elements added to obtain the necessary mechanical and physical properties. The most common copper alloys are divided into six groups, and each group contains one of the following major alloying elements: brasses—major alloying element is zinc; phosphor bronzes—major alloying element is tin; aluminum bronzes—major alloying element is aluminum; silicon bronzes—major alloying element is silicon; copper-nickels and nickel-silvers—major alloying element is nickel; and dilute-copper or high-copper alloys, which contain small amounts of various elements such as beryllium, cadmium, chromium or iron.