Tru-Bronze Information Sheet

Tru-Bronze is a non-precious alloy that was developed to make models, sample line jewelry or finished costume jewelry. Tru-Bronze has the look of 14K yellow gold which will show your jewelry well without the cost of karat gold. This casting alloy can resist tarnishing for long periods of time in sample cases but may tarnish when worn against the skin. Tru-Bronze does not need to be gold plated and can be directly rhodium plated without the need for pre-nickel plating.

Recommended Uses: Tru-Bronze is an excellent casting alloy for non-precious applications.

Tru-Bronze can be cast using standard gypsum bonded investments. Recommended casting temperature: 1895° - 1945°F (1035° - 1065°C). Recommended flask temperature: 1020° - 1200°F (550° - 650°C). Quench time: minimum 5 minutes. Temperatures may differ from these recommendations depending on processing considerations.

Castings can be pickled using sodium bisulfate solution. Never use ammonia based solutions with Tru-Bronze. Hoover & Strong recommends using a minimum of 50% fresh metal with each cast to avoid brittle castings.