GB/T 24177-2009
Standard test methods for characterizing duplex grain sizes (English Version)

Standard No.

GB/T 24177-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 24177-2009

Scope

This standard specifies the method for judging the double grain size. This standard divides double grain size into two categories and six types in total, and describes the characteristics of each type, and provides the corresponding characterization methods and report formats. This standard is only a recommended test method, and does not specify the acceptable level range of the material acceptance test.

GB/T 24177-2009 Referenced Document

• ASTM E7-00 Standard Terminology Relating to Metallography*， 2024-04-19 Update
• ASTM E930-99(2007) Standard Test Methods for Estimating the Largest Grain Observed in a Metallographic Section (ALA Grain Size)
• GB/T 13298-1991 Metal--Inspection method of microstrcture
• GB/T 15749-2008 Measuring method in quantitative metallography
• GB/T 6394-2002 Metal-methids for estimating the average grain size

GB/T 24177-2009 history

• 2009 GB/T 24177-2009 Standard test methods for characterizing duplex grain sizes