BH's unique composition results in a rich yellow color, producing castings with superior physical and mechanical properties.  Aurident's BH is a high noble, finegrain, type III crown and bridge alloy containing 64% gold, 3% palladium and 23.4% silver.  Its high yield strength and substantial elongation make BH suitable for single units and long span bridges.  The ease of casting and workability have made BH one of Aurident's most popular gold crown and bridge alloys.