Well thermal stability according to the using conditions of crucible heat and cold. Well corrosion resistance, impact resistance performances, to ensure the reliability of product quality. Well resistance to strong acid, strong alkali. Good heat transfer performances of crucible: for greatly shorten the melting for time and save energy. In high-temperature using process, it got small thermal expansion coefficient. And certain strain resistance to the thermal shock, quenching. Long service life. Using Tips: Stored in dry place, do not get it wet. After drying the crucible, don'for t make it for touch with water. Be careful not to give a mechanical impact force, not from a fall or impact. Specification: Bulk density: 1.80g/cm3 Electric resistivity: 9m Bending strength: 45MPa Compressive: 65MPa Dimensions: 57x42x11.5mm(2.24x1.65x4.53in)(approx) Color: Dark Gray Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Crucible