GB/T 7962.16-2010Test methods of colourless optical glass - Part 16: Linear thermal expansion coefficient, transformation temperature and yield point temperature (English PDF)
无色光学玻璃测试方法 第16部分：线膨胀系数、转变温度和弛垂温度
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
January 14, 2011
Implementation date
May 1, 2011
Scope
GB/T 7962.16-2010 is the English-translated version of 无色光学玻璃测试方法 第16部分：线膨胀系数、转变温度和弛垂温度.
GB/T 7962.16-2010 is the Chinese standard "Test methods of colourless optical glass - Part 16: Linear thermal expansion coefficient, transformation temperature and yield point temperature".
Its scope clause reads: This part of GB/T 7962 specifies the test methods, test steps and data processing for the average linear thermal expansion coefficient, transformation temperature and yield point temperature of colourless optical glass.
This part is applicable to the tests on the average linear thermal expansion coefficient, transformation temperature and yield point temperature of colourless optical glass. Its clauses include terms and definitions.
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Document preview — GB/T 7962.16-2010
National Standard of the People's Republic of China
- ICS
- 81.040.01
- Classification
- N 05
- Replacing
- GB/T 7962.16-1987
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword i
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Principle
- 5 Apparatus
- 6 Sample
- 7 Test steps
- 8 Data processing
1 Scope
This part of GB/T 7962 specifies the test methods, test steps and data processing for the average linear thermal expansion coefficient, transformation temperature and yield point temperature of colourless optical glass.
This part is applicable to the tests on the average linear thermal expansion coefficient, transformation temperature and yield point temperature of colourless optical glass.
2 Normative references
The following documents contain provisions which, through reference in this part of GB/T 7962, constitute provisions of this part. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest editions apply to this part.
GB/T 903 Colourless optical glass
3 Terms and definitions
For the purposes of this part, the following terms and definitions apply.
3.1 average linear thermal expansion coefficient
alphaL elongation per unit length of the sample under test for each 1°C increase in temperature within a certain temperature range
3.2 transformation temperature
Tg temperature corresponding to the intersection between the extended straight line parts of the low-temperature area and the high-temperature area on the expansion curve of the sample under test
3.3 yield point temperature
Ts temperature at which the structure of the sample under test yields and starts to collapse in the temperature rise process […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Cited by
- GB/T 45908-2025Sodium chloride optical components
- GB/T 44450-2024Optics and photonics - Optical materials and components - Characterization of optical materials used in the infrared spectral range from 0.78 μm to 25 μm
- GB/T 44567-2024Optics crystal—Ultraviolet grade calcium fluoride crystal
- GB/T 903-2019Colourless optical glass
- GB/T 36265-2018Infrared optical glass
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Editions of GB/T 7962.16
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 7962.16-2010 | Test methods of colourless optical glass - Part 16: Linear thermal expansion coefficient, transformation temperature and yield point temperature | current edition | Current |
| GB/T 7962.16-1987 | Test methods of colourless optical glass - Part 16: Linear thermal expansion coefficient, transformation temperature and yield point temperature | previous edition | Superseded |
This page sells the current edition, GB/T 7962.16-2010. Earlier editions are listed for reference only.
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Related Standards
GB/T 7962.1-2010 — Test methods of colourless optical glass - Part 1: Refractive index and coefficient of dispersion
GB/T 7962.10-2010 — Test methods of colourless optical glass - Part 10: X-rays stability
GB/T 7962.11-2010 — Test method for colourless optical glass - Part 11: Precise test method for refractive index in the visible wave band
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