GB/T 4335-2013: Translated English of Chinese Standard. (GBT 4335-2013, GB/T4335-2013, GBT4335-2013): Determination of ferrite grain size for cold rolled low carbon steel sheets
https://www.chinesestandard.net, 30 nov. 2019 - 26 pages
This Standard specifies the terms and definitions, samples and preparation, determination methods, test report and the like of ferrite grain size for cold rolled low carbon steel sheets. This Standard is applicable to the determination of ferrite grain size for cold rolled low carbon steel sheets whose carbon content are less than 0.2%. The determination of grain size for other metal materials whose grain shape is similar to the rating figure of this standard series can also be carried out by reference to this Standard.
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according to Formula applicable approximately equal assessment average grain cross-sectional average intercept calculated according carbon steel sheets Change characterized China circular measurement grid cold rolled low comparison method counted dated Determination methods Determination of ferrite diameter document drafted expressed extensibility is approximately ferrite grain ferrite grain size field of view formulas of micro-grain GB/T grain cross-sectional area grain extensibility grain size number grains per square half Inspection Institute Iron and Steel length low carbon steel magnification of 100 material measurement line segment Metal Micro-grain size number Modify Normative references number G number of grains number of sections Number-6 observation parallel plane rating figure magnification recommended record reference magnification 100 relationship relevant data result Revise rolled low carbon Samples and preparation Scope standard rating figure Table technical Terms and definitions test report thickness third standard rating values Various calculation formulas