Rectangular Clear Quartz Trays

Features: Extreme Hardness Low Expansion Excellent High Temperature Resistance Maximum Continuous Temperature 1100° C Extreme Chemical Purity Excellent Corrosion Resistance Excellent Electrical Insulation Properties Remarkable Stability Under Atomic Bombardment MECHANICAL PROPERTIES Specific Density (according to fusion process) 2.2 Hardness (Mohs scale) 7 Rupture stress: traction N.m-2 2.107   compression N.m-2 5.108 ELECTRICAL PROPERTIES Dielectric constants        3.5 Dielectric rigidity V.m-1 5.106 Loss coefficients at 1 MHz   20.10-4 THERMAL PROPERTIES Linear expansion coefficient  K-1 5.4.10-7 Specific heat at 20° C J.kg-1. K-1 7.5.102 Heat conductivity at 20° C W.m-1. K-1 1.05 Annealing point ° C 1120 Softening point ° C 1460 CHEMICAL PROPERTIES SiO2 content       % 99.8 Element content (typical analysis) Fe ppm 14   Ti ppm 100   Al ppm 550   Ca ppm 40   Mg ppm 11   Na ppm 25   K ppm 20   Li ppm 5