Yabuy High-purity Melting Graphite Crucible for High- Gold and Silver Metal Smelting Tools

Please note this item ships from an international seller. Expected delivery is 10-15 days. This product has fine thermal conductivity and thermostability. When used in hyperthermal condition it has certain resistance to snap hyperthermal and cold for it has small thermal expansivity. And it has chemical stability that has nice resistance to strong acid and strong base. With those properties it is very suitable to melt various gold silver copper aluminum zinc and other metals. Features: Fine thermal stability: aims at the using conditions of graphite crucible that snap hyperthermal and cold. Fine corrosion resistance and shock resistance: ensure the reliability of product quality. Fine resistance to strong acid and strong base. Fine thermal conductivity: shorten the melting time and save energy. The ash content is less than 0.1% ensuring the metals is not contaminated in smelting. Suitable to melt various metals like gold silver copper aluminum zinc and others. Chemical stability long service life and attractive appearance. More practical than ordinary material and able to withstand high . Specifications: Size: 1 2 3 4 5 6 7 8 9 10 11 (optional) Specific size (External Diameter * Height): 20 * 20mm / 0.08 * 0.08in (size 1) 25 * 25mm / 0.98 * 0.98in (size 2) 30 * 40mm / 1.18 * 1.57in (size 3) 35 * 35mm / 1.38 * 1.38in (size 4) 40 * 40mm / 1.57 * 1.57in (size 5) 40 * 60mm / 1.57 * 2.36in (size 6) 40 * 80mm / 1.57 * 3.15in (size 7) 50 * 50mm / 1.97 * 1.97in (size 8) 50 * 80mm / 1.97 * 3.15in (size 9) 60 * 60mm / 2.36 * 2.36in (size 10) 75 * 75mm / 2.95 * 2.95in (size 11) Refractoriness: 1500°C Carbon content: 99.9% Bulk density: 1.75gcm3 Package size: 20 * 20 * 20mm / 0.08 * 0.08 * 0.08in (size 1) 25 * 25 * 25mm / 0.98 * 0.98 * 0.98in (size 2) 40 * 30 * 30mm / 1.57 * 1.18 * 1.18in (size 3) 35 * 35 * 35mm / 1.38 * 1.38 * 1.38in (size 4) 40 * 40 * 40mm / 1.57 * 1.57 * 1.57in (size 5) 60 * 40 * 40mm / 2.36 * 1.57 * 1.57in (size 6) 80 * 40 * 40mm / 3.15 * 1.57 * 1.57in (size 7) 50 * 50 * 50mm / 1.97 * 1.97 * 1.97in (size 8) 80 * 50 * 50mm / 3.15 * 1.97 * 1.97in (size 9) 60 * 60 * 60mm / 2.36 * 2.36 * 2.36in (size 10) 75 * 75 * 75mm / 2.95 * 2.95 * 2.95in (size 11) Package weight: 7g / 0.25ounce (size 1) 15g / 0.53ounce (size 2) 30g / 1.06ounce (size 3) 36g / 1.27ounce (size 4) 45g / 1.59ounce (size 5) 65g / 2.29ounce (size 6) 90g / 3.17ounce (size 7) 68g / 2.4ounce (size 8) 120g / 4.23ounce (size 9) 128g / 4.51ounce (size 10) 270g / 9.52ounce (size 11) Note: 1. Please store the product in drying place and do not get it . 2. Please avoids after drying the product. 3. Be careful not to give a impact power on it. 4. Please allow a little difference due to manual measurement. Package List: 1 * Graphite Crucible