High-Purity Graphite Crucible: Features excellent heat resistance and thermal conductivity, with minimal heat deformation. Designed for electric melting furnaces, ensuring easy post-use removal. 3KG Capacity: Holds 334ML, melting up to 6.4KG gold, 3.5KG silver, 3KG copper, or 0.9KG aluminum��ideal for smelting precious metals. Electric Furnace Use Only: Not suitable for open flames (e.g., propane/carbon furnaces). Compatible with electric, vacuum, or gas-protected furnaces. Durable Coating: Glazed surface enhances longevity. Use one material per crucible to prevent contamination. Inspect before each use and replace if needed. Secure Grip Design: Ring-shaped groove at the top for easy tong handling, ensuring safe pouring��great for beginners. Color: Black Material: Metal Package Includes: 1 �� Crucible Note: Slight color variations may occur due to lighting/screen differences. Size tolerance: ��1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store