1/2/3KG Foundry Clay Graphite Crucibles Cup High-Temperature Gold Silver Metal Smelting Graphite Crucible Casting Cups Features: Well thermal stability: according to the using conditions of graphite crucible snap heat and cold. Well corrosion resistance, impact resistance performance, to ensure the reliability of product quality. Well resistance to strong acid, strong alkali. Good heat transfer performance of graphite crucible: for greatly shorten the melting time and save energy. And certain strain resistance to the thermal shock, quenching. Long service life. Specifications: Main material: graphite The weight of gold that can be loaded: 1KG, 2KG, 3KG (optional) The inner diameter of the crucible: 1kg: 38mm 2kg: 44mm 3kg: 50mm The outer diameter of the crucible: 1kg: 50mm 2kg: 55mm 3kg: 60mm The outer diameter of the large ring: 1kg: 65mm 2kg: 72mm 3kg: 75mm The inner height: 1kg: 115mm 2kg: 140mm 3kg: 150mm The outer height: 1kg: 125mm 2kg: 155mm 3kg: 170mm Item weight: 1kg: 140g / 4.9oz 2kg: 330g / 11.6oz 3kg: 360g / 12.7oz Package size: 1kg: 15 10 10cm / 5.9 3.9 3.9in 2kg: 17.5 10 10cm / 6.93.9 3.9in 3kg: 20 10 10cm / 7.9 3.9 3.9in Package weight: 1kg: 160g / 5.6oz 2kg: 350g / 12.3oz 3kg: 380g / 13.4oz Package list: 1 Graphite Crucible