Graphite Ingot Mould Rectangular Metal Casting Mold Crucible Melting Refining Gold Silver Copper Item Type: Graphite Mold Material: Graphite Shape: Rectangle External Size: Approx. 42 x 22 x 10mm / 1.7 x 0.9 x 0.4in Internal Size: Approx. 35 x 15 x 5.5mm / 1.4 x 0.6 x 0.2in Introduction: The graphite crucible melting material is crystalline graphite. Therefore, the original graphite with various physical and chemical properties is retained. Using special high purity graphite materials, high strength, high density graphite materials; can provide excellent performance of graphite crucible smelting, casting crucible, graphite groove, mold and other graphite products. The selection of special special materials can make our graphite crucible products more durable than ordinary materials, with longer service life and better resistance to high temperatures above 2000℃.