Some glass bakeware is made of soda-lime glass, as opposed to the more common borosilicate glass. It is made by melting high purity silica sands and has uses in refractories, investment casting, radar windows etc . (1969), Shaffer: 3C-SiC. Its high hardness, excellent dielectric properties, refractoriness and good thermal properties make it the material of choice for a wide range of applications. Product Data Poor polishing quality produces much smaller E and H than the literature values for bulk fused silica. 0.17. Vitreous Silica, in all its forms, offers a variety of properties such as: Permeability Extreme Hardness Solubility in Wate: 0.0017 g / 100 g @ 20 C . Whare are Fused Silica Properties. Young's Modulus: 71.2: 74.8: GPa: 10.3267: 10.8488: 10 6 psi: Glass Temperature: 1233: 1492: K: 1759.73: 2225.93 F . Statistical Calculation and Development of Glass Properties Lamp Grade Tubing. Only a cursory investigation upon the subject . Silica is one of the most abundant oxides in the earths crust. 75.8 GPa . (1013 poises) Modulus of Rupture, abraded 52.4 MPa Strain Point 893 C (1014.5 poises) Bulk Modulus 35.4 GPa Thermal Conductivity 1.30 W/m K Poisson's Ratio 0.16 Thermal Diffusivity 0.0075 cm2/s The bulk modulus of elasticity of Silicon is 98 GPa. Popular Products of Uncoated UV Fused Silica Quartz optics by Fused Silica Optics - Fused Silica Optics Co.,LTD from China. Rigidity modulus: 31 GPa Young's modulus: 71.7 GPa Poisson's ratio: 0.17 Lame elastic constants: =15.872 GPa, =31.261 GPa Coefficient of thermal expansion . [1] Shear Modulu: 33.77 GPa . Using Knoop's pyramid test Siegle et al. The moduli of Pyrex and quartz increased with rising temperature, up to the softening point of the glass, while that of soft glass decreased. Combining the results in Fig. Data for Silicon and Germanium Single Crystals, and for Fused Silica, Journal of Applied Physics, Vol. Normal varieties of Fused Silica contain water which gives strong absortion in the IR. It has excellent transmission capabilities in the ultraviolet range. internal diameter by 30 cm. [100] Young's modulus : Y 0 =(C 11 +2C 12) . A material with low stiffness (red) provides a higher deformation . You can change this selection at any time, but products in your cart, saved lists, or quote may be removed if they are unavailable in the new shipping country/region. . lengths of silica tube . The information concerning the changes in Young's modulus of fused quartz is not so complete or exact. For pure inorganic silica coatings, i.e., TEOS, the structure is dense, similar to a pure glass network, but with the addition of the small-chained organic VTMS (2 carbon chain length), the short-range network was modified, though not significantly. Popular Products of UV Grade Thin Fused Silica Optical Windows by Fused Silica Optics - Fused Silica Optics Co.,LTD from China. Structure of quartz and fused silica In the quartz glass structure all atoms are bonded t at least two others. GE Quartz is the world's leading producer of fused quartz for lighting applications. AbstractIn this study, the evaluation of thermal stability of the micrometer-sized silica particle reinforced epoxy composite was carried out through the measurement of thermal expansion coefficient and Young's modulus of the specimens. 3.1x10 10 Pa (4.5x10 6 psi) Young's Modulus. The figure depicts a given uniaxial stress for tensile (extension, left) or pressure (compression, right). Fused Silica. . Properties with values for just one material (6, in this case) are not shown. Michelle gave a great summary on the qualitative relationship between hardness (H), elastic modulus (E), and yield strength (Y). Weight loss in vacuum ranges from 10 -7 to 10 -6 g/cm 2 .sec over a temperature range of 1700 . 7940 Fused Silica 10.4 4.5 0080 Soda Lime Silicate 10.2 4.2 7900 96% Silica 10 4.2 7740 Borosilicate, Low Expansion 9.1 3.8 7070 Borosilicate, Low Loss 7.4 3 E = Young's Modulus The hardness and Young's modulus of the coatings declined noticeably with increasing level . Fused Silica Optics for sale, Quality UV Grade Fused Silica Mirror Optics withTransmission Curve on sale of Fused Silica Optics Co.,LTD from China. The mechanical stiffness of materials under uniaxial loading is called the Young's modulus, and is typically represented by the symbol E in engineering texts, so Hooke's law is often written as =E . Fused Silica glass is pure silicon dioxide (100% SiO2) in the non-crystalline state, as well as silicon dioxide in the organic state and silicon oxide in the liquid state (in this case a liquid). The elastic modulus is often used for estimation of soil settement and . Fused silica is the glassy form of quartz and is thus isotropic. Fused silica is produced using high-purity silica sand as the feedstock, and is normally melted using an electric furnace, resulting in a material that is translucent or opaque. Modulus of elasticity at 20 C (N/mm 2) 7.25 10 4: 7.25 10 4: 7.25 x 10 4: Modulus . Where: E is Young's modulus, usually expressed in Pascal (Pa) is the uniaxial stress. The Young's modulus of elasticity of unannealed silicate glass fibers ranges from about 52 GPa to 87 GPa. during cooling, the curve does not follow the heating curve, but youngs modulus increases even slightly up to values of 29.1 gpa in the temperature range 800-1000 c and then decreases to values (again according to an s-shaped curve) of 12.9 gpa at a temperature of 220 c, followed again by a steep decrease below 215 c (within the 10 c from From the above analysis, it can be concluded that, as the oxide grows, it consumes the silicon atoms at the surface of the wafer. There are 24 material properties with values for both materials. Water-free varieties of Fused Silica are available. High purity alumina is usable in both oxidizing and reducing atmospheres to 1925C. The TMDSO film deposited at 50 W and 0 had Young's modulus and hardness values in a similar range to fused silica/glass [5, 39], thus providing the context of the mechanical properties that . Under tension, the story is more complicated. 988-997 (1953). Fused Silica Optics for sale, Quality UV Grade Thin Fused Silica Optical Windows on sale of Fused Silica Optics Co.,LTD from China. . 6.76 @ 27 C . Fused Silica is the glassy form of Quartz and is thus isotropic. Fused Silica Optics for sale, Quality Fused Silica Grades Glass Sheets Optics Manufacturers on sale of Fused Silica Optics Co.,LTD from China. 7.2x10 10 Pa (10.5x10 6 psi) Poisson's Ratio. The design tensile strength for fused quartz with good surface quality is in excess of 4.8 x 10 7 Pa (7,000 psi). E = 2G (1+) = 3K (1-2) where: E is Young's modulus. Fused Silica is difficult to fabricate and thus costs more than all the other glasses. Young's modulus: 71.7 GPa; Poisson's ratio: 0.17; Lam elastic constants: . . E Glass fibers that have been annealed to compact their atomic structure will increase in Young's modulus from 72 GPa to 84.7 GPa [4]. A half-full bar means it's 50% of the highest, and so on. Youngs Modulus (E) 335 GPa: Shear Modulus (G) 148.1 GPa: Bulk Modulus (K) 240 GPa: Elastic Coefficients: C11=496 C12=164 C13=115 C33=498 C44=148 . Relationship between the Elastic Moduli. BK7 is a high quality optical glass that is used whenever the additional benefits of fused silica are not required. . Fused silica is known as the purest form of glass and has many industrial uses due to its properties. Young's Modulus: 90,3 GPa (mean value) Poisson's ratio: 0,24; Knoop hardness : 620 (HK 0,1/20 ; ISO 9385) . Both borosilicate glass and fused silica are glass and glass-ceramics. Rupture Modulus in MPa @ 25C The Young's modulus of elasticity is the elastic modulus for tensile and compressive stress in the linear elasticity regime of a uniaxial deformation and is usually assessed by tensile tests. Elastic (Young's) Modulus 72.7 GPa Softening Point 1585 C . It also has higher hardness. We have set your country/region to Canada. is the Poisson number. It exists in 3 crystalline forms as well as amorphous forms. Key Fused Silica Properties Near zero thermal expansion Soda-lime glass, also called soda-lime-silica glass, is the most prevalent type of glass, used for windowpanes and glass containers (bottles and jars) for beverages, food, and some commodity items. During an experiment the ends of this fuLrnace were closed with asbestos shields carrying short (2 to 3 cm.) So, compared to other optical glasses, fused silica behaves differently under compressive loads. Sign In; Create Account; Show search Show menu. It is tough and hard and has a very low expansion. Modulus of Elasticity of Silicon The Young's modulus of elasticity of Silicon is 165 MPa. Dielectric Constant. With a low thermal expansion coefficient and high light transmittance it is a good selection for demanding ball lens applications in the ultraviolet, visible, and near infrared spectra. By comparison, steel has a Young's Modulus of the order of 205 GPa. font size. Two factors strongly affect the results of E and H. One factor is the polishing quality of the fused silica surface. 5.5x10-7 cm/cm.C (20 . Together with the strength of the siliconoxygen (Si-O) chemical bond gives quartz glass high temperature stability and chemical resistance. 8 and Fig. Elastic Modulus of A Range of Glass Compositions as a Function of Temperature . TECHSPEC 1 UV Fused Silica Windows are precision manufactured using UV-grade synthetic fused silica. Fused Silica (FS or fused quartz is a term used to describe a family of very hard and transparent glass with excellent optical properties. Poor polishing quality produces much smaller E and H than the literature values for bulk fused silica. The finished product is a transparent glass with an ultra-high purity and improved optical transmission. Elastic Coefficient: C 11 = 164 C 12 = 53 C 44 = 33.7 GPa . There is a huge range of glasses available for which we hold data and some stock. . . Typical of glasses, it lacks long range order in its atomic structure. Even for a well-polished . For all the specimens in this study from the baseline to those containing 50 wt% silica filler, the thermal expansion coefficients and the Young's . Young's Modulus: 66.3: 74.8: GPa: 9.616: 10 . It is defined as the ratio of the stress along an axis over the strain along that axis in the range of elastic soil behaviour. Fused silica, commonly referred to as synthetic fused quartz, is produced using high purity silica sand that is manufactured from SiCL 4. . Tensile Modulus - or Young's Modulus alt. 36.5 MPa . Together, these materials . Popular Products of UV Fused Silica Grades A Glass Optics by Fused Silica Optics - Fused Silica Optics Co.,LTD from China. Young's modulus, Modulus of rigidity and Poisson's ratio are determined by measuring the velocities of the longitudinal and transverse elastic waves in a well annealed rod of size 100 ~ 150 x 10 x 10 mm at room temperature. In practice, a design stress of 0.68 x 10 7 Pa (1,000 psi) is generally recommended. long. While the simplication of using the highest possible value of Young's modulus was acceptable for the purpose of introducing silicon micromachining to the community 25 years Young's modulus (E), Modulus of rigidity (G) and Poisson's ratio ( s) are calculated using the following equations. Fused quartz, fused silica or quartz glass is a glass consisting of almost pure silica (silicon dioxide, SiO 2) in amorphous (non-crystalline) form. Effect of Surface Flaws on Mechanical Properties Fused Silica is extremely strong in compression, with a design compressive strength greater than 1.1 x 10 9 Pa. REFERENCES: (1) Handbook Optical Constants, ed Palik, V1, ISBN -12-544420-6 Normal varieties contain water which gives strong absorption in the IR. Young's Modulus (GPa): 73 . For most silicate glasses, Poisson's ratio . See also: Strength of Materials Ultimate Tensile Strength of Quartz Ultimate tensile strength of Quartz is 48 MPa. Fused Silica Optics for sale, Quality UV Grade Fused Silica Windows / JGS1 JGS2 JGS3 Optial Glass Windows on sale of Fused Silica Optics Co.,LTD from China.