The Ultra Rich Reddish Yellow Master Alloy is a high-performance investment casting alloy engineered for stone-in-place casting applications. Part of the Ultra Line of casting alloys, this master alloy produces a rich reddish yellow color when combined with fine gold to yield alloys in the 9K–14K range. It features notably high silver content, contributing to its excellent tarnish resistance and casting reusability. This alloy contains no gold and is sold by the troy ounce.
| Alloy Line | Ultra Line High Performance Casting Alloys |
|---|---|
| Application | Stone-in-place investment casting |
| Color (when alloyed with fine gold) | Rich reddish yellow |
| Target Karat Range | 9K–14K |
| Gold Content | None (contains no gold) |
| Composition – Copper (Cu) | 65% |
| Composition – Silver (Ag) | 23% |
| Composition – Zinc | 12% |
| Additional Elements | Proprietary metals; may also contain silicon and other elements |
| Sold By | Troy ounce (20 pennyweights / 31.1 grams) |
The composition listed reflects the primary declared elements. Proprietary metals are present in the formulation and are not fully disclosed. The alloy may also contain silicon or other elements not listed in the composition breakdown.
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