Generic 5pcs Torch Melting Kit Gold & Silver Crucible Rod Graphite Ingot

Description : Characteristics : The graphite crucible has good thermal conductivity and high temperature resistance . In high temperature use , the coefficient of thermal expansion is small , and it has certain strain resistance to heat and cooling . It has strong corrosion resistance to acid and alkaline solution and has excellent stability . High - quality materials : High - purity , high - strength , high - density graphite materials ; processed by high - precision machining . The graphite used is mainly graphite material used for melting precious metals , and the durability is twice that of materials . Widily using ： Very versatile , can be used for experiments and smelting of non - ferrous metals . Such as gold , silver , copper , aluminum , and so on . Considering the size of this product , it is more suitable for small - capacity metal melting . Note : It needs to be stored in a dry place . After drying , do not touch the water . Paying attention to slow heating during the first use will help increase the service life . Specification : Material : Graphite / Quartz / Stainless Steel Cylindrical Graphite Outer Dia .: 40 mm / 1 . 57inch Inner Dia .: 30 mm / 1 . 18inch Total Height : 40 mm / 1 . 57inch Inner Height : 35 mm / 1 . 38inch Quartz Melting Crucible Capacity : Material : Quartz Outer Diameter : 57 mm / 2 . 24inch Inner diameter : 43 mm / 1 . 69inch Height : 20mm / 0 . 79inch Depth : 15mm / 0 . 59inch Net weight : approx . 40g Square Graphite Bulk density ≥ 1 . 82 g / cm3 Bending strength ≥ 45 Mpa resist compression ≥ 65 Mpa particle ≤ 43 um （ 0 . 043 mm ） Size : 7 . 2 x 5 . 7 x 1 . 2cm / 0 . 28 x 0 . 22 x 0 . 05inch Package Includes : 1 x Quartz Melting Crucible 1 x Tongs 1 x Square Graphite 1 x Cylindrical Graphite a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a

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