Description Type: Hand Tool Parts Origin: Mainland China High purity graphite: 99.99% Quantity: 1 pcs Product Description and high quality Features: - Excellent thermal stability: suitable for rapid heating and cooling conditions - Good corrosion resistance and impact resistance, ensuring reliable product performance - Resistant to strong acids and strong alkalis - Superior heat transfer performance, helping to reduce melting time and save energy - Ash content less than 0.1%, ensuring precious metals remain uncontaminated during smelting - Low thermal expansion coefficient under high-temperature conditions - Good resistance to thermal shock and quenching - Long service life Specifications: - Main material: Graphite - Weight capacity options: 1 kg, 2 kg, 3 kg, 4 kg, 5 kg (selectable) - Inner diameter: 1 kg: 38 mm 2 kg: 44 mm 3 kg: 50 mm 4 kg: 60 mm 5 kg: 69 mm - Outer diameter: 1 kg: 47 mm 2 kg: 58 mm 3 kg: 65.5 mm 4 kg: 75 mm 5 kg: 89 mm - Outer diameter of the large ring: 1 kg: 58 mm 2 kg: 65 mm 3 kg: 80.5 mm 4 kg: 85 mm 5 kg: 100 mm - Height: 1 kg: 88 mm 2 kg: 110 mm 3 kg: 110 mm 4 kg: 130 mm 5 kg: 130 mm - Capacity: 1 kg: 75 ml 2 kg: 150 ml 3 kg: 195 ml 4 kg: 340 ml 5 kg: 450 ml Package List: 1 × Graphite Crucible Note: This product is a consumable item and may experience oxidation with each use. Oxidation may be more pronounced when used for melting aluminum.