Strength of glass
Glass typically has a tensile strength of 7 megapascals (1,000 psi)[1], however theoretically it can have a strength of 17 gigapascals (2,500,000 psi) which is due to glass's strong chemical bonds. Imperfections on glass such as scratches and bubbles decrease the strength of glass.[2] The imperfections (surface flaws) on a piece of glass have a great effect on the strength of glass (even more than other brittle materials).[1] The chemical composition of the glass also impacts the tensile strength of glass.[3] The processes of thermal and chemical toughening can increase the tensile strength of glass.[4]
Glass has a compressive strength of 1,000 megapascals (150,000 psi).[5][6]
Strength of glass fiber
Glass fibers have a much higher tensile strength than regular glass (200-500 times stronger than regular glass).[7] This is due to the reduction of flaws in glass fibers[8] and that glass fibers have less surface area than regular glass.[2]
Strength of fiberglass
Fiberglass's strength depends on the type. S-glass has a strength of 700,000 pounds per square inch (4,800 MPa) while E-glass and C-glass have a strength of 500,000 pounds per square inch (3,400 MPa).[9]
Hardness
Glass has a hardness of 6.5 on the Mohs scale of mineral hardness.[10][11]
References
- Kasunic, Keith J. (2015-03-02). Optomechanical Systems Engineering. John Wiley & Sons. ISBN 9781118809907.
- Lehman, Richard (November 24, 2017). "The Mechanical Properties of Glass" (PDF). Retrieved November 24, 2017.
- The Glass Industry. Ashlee Publishing Company, Incorporated. 1923.
- Kaltenbach, Frank (2004-01-01). Translucent Materials: Glass, Plastics, Metals. Walter de Gruyter. ISBN 9783034614320.
- "Physical Properties of Glass - Saint-Gobain Glass UK". uk.saint-gobain-glass.com. Retrieved 2017-11-26.
- Bos, Freek; Louter, Christian; Veer, Fred (2008). Challenging Glass: Conference on Architectural and Structural Applications of Glass, Faculty of Architecture, Delft University of Technology, May 2008. IOS Press. ISBN 9781586038663.
- Tiwari, Nachiketa (November 25, 2017). "Introduction to Composite Materials and Structures" (PDF). Retrieved November 25, 2017.
- Wang, Ru-Min; Zheng, Shui-Rong; Zheng, Yujun George (2011-07-14). Polymer Matrix Composites and Technology. Elsevier. ISBN 9780857092229.
- Engineers, NIIR Board of Consultants and (2006-10-01). The Complete Technology Book on Plastic Extrusion, Moulding And Mould Designs. ASIA PACIFIC BUSINESS PRESS Inc. ISBN 9788178330082.
- Limited, Australian Drilling Industry Training Committee (2015-04-01). The Drilling Manual, Fifth Edition. CRC Press. ISBN 9781439814215.
- Murphy, J. (2001-11-22). Additives for Plastics Handbook. Elsevier. ISBN 9780080498614.