... . 2.56 g / cm3 2, Modulus of Elasticity--- approx. 93 x 103 Mpa 3, Bending Strength--- approx. 3.6 MPa The ... Coefficient of Mean Linear Expansion---α(20 - 700oC) (0 ± 0.5) x 10-7 /K 5. Resistance to Temperature Differences (RTD) Resistance of ... (diameter 60mm, weight 188g) freefall from180mm height, striking the panel 10 times. No scratching or cracking.Gking glass advantage 1. Specialized ...